Abbaganno, N. (1967). Humanism. In P. Edward (Ed.), The encyclopedia of philosophy (Vol. 4). New York: Macmillan and Free Press.
 Camus, A. (1961). The myth of sisyphus. New York: Vintage books.
 Chukwujekwu, S. C. (2007). Personalism and humanism in the philosophy of Pope John Paul II. Annual memorial lecture series. Awka: Charles and Patrick.
 Doniger, W. (1999). Merriam—Webster’s encyclopedia of world religions. Massacusetts.
 Dukor, M. (2007). Propositions of African cultural values. Journal of the society for Arts and Humanities, 2, 1-6.
 Dukor, M. (2010). Theistic humanism of African philosophy: A great debate on substance and method of philosophy. Berlin: Lambert Academic Publishing.
 Edwards, F. (1989). What is humanism. Washington: Executive Director American Humanist Association.
 Ejizu, C. I. (1986). Continuity and discontinuity for Igbo traditional religion. In E. I. Metuh (Ed.), The Gods in retreat. Enugu: Fourth Dimension.
 Ekwuru, E. G. (2009). Igbo cosmology: The ontogeny and hermeneutics of Igbo sculture studies in african ethnoaesthetics. Owerri: Living Flames Resources.
 Epstein, C. M. (2010). Good without God: What a billion nonreligious people do believe. New York: Harper Collins.
 Haralambos, M., Holborn, M., & Heald, R. (2008). Sociology: Themes and perspective. London: Collins.
 Kalu, O. U. (1978). Precarious vision: The African perception of this world. Enugu: Fourth Dimension.
 Madu, J. E. (2003). The paradox of the “one” and the “many” in religion. Niger: Global communications.
 Madu, J. E. (2004). Honest to African cultural heritage. Onitsha: Coskan Associates.
 MacGregor, G. (N.D). Introduction to religious philosophy. London: Macmillan.
 Mairi, R. (1998). Chambers 21st century dictionary. New Delhi: Allied Chambers.
 Metuh, E. I. (1978). Comparative studies of African traditional religion. Onitsha: Imico.
 Nwala, T. U. (1985). Igbo Philosophy. Ikeja: Literamed.
 Ugwu, C. O. T., & Ugwueye, L. E. (2004). African traditional religion: A prolegomenon. Lagos: Merit international.
 Momoh, C. S. (1996). African moral atheism. Essence: An International Journal of Philosophy, 1, 20-28.
 Mondin, B. (1995). Philosophical anthropology. Rome: Urbaniana University.
 Onunwa, U. (1990). Studies in Igbo traditional religion. Obosi: Pacific.
 Richard, O. (1983). A critique of revolutionary humanism. Frantz Fanon, Missouri: Warren H. Inc.
 Ogunmodede, F. (2007). John Paul II and the problem of humanism. In S. C. Chukwujekwu (Ed.), Personalism and humanism in the philosophy of Pope John Paul II Annual memorial lecture series. Awka: Rex Charles and Patrick.
 Okeke, D. C. (2002). Foundations of religious studies. Enugu: Rabboni.
 Okoye, J. I. (2007). Keynote address: Personalism and Humanism in the philosophy of Pope John Paul II. In S. C. Chukwujekwu (Ed.), Personalism and humanism in the philosophy of Pope John Paul II Annual memorial lecture series. Awka: Rex Charles and Patrick.
 Ritzer, G. (2012). Sociological theory. New York: McGraw-Hill.
 Stumpf, S. E. (1975). Philosophy: History and problems. New York: McGraw-Hill Book Company.
 Umezinwa, C. (2009). Why we study humanities. In I. Emejulu, & C. Umezinwa (Ed.), Humanities for tertiary institutions. Ogidi: MasterPrint.
 Ukaegbu, F. N. (2002). The Igbos: The Afrikan root of nations. Ibadan: Hernemann, Educational Books.
 Uche, O. O. C. (2006). The dynamics of religion as a matrix of culture. In N. Ojiakor, & Iyke (Eds.), Readings in Nigeria peoples and culture. Enugu: NGIB Publishers.
 Uche, O. O. C. (2007a). Comte’s religion of humanity: Some sociological implications. Journal of the society for Arts and Humanities, 2, 18-26.
 Uche, O. O. C. (2007b). Globalizing African priesthood essence. International Journal of Philosophy, 4, 91-101.
 Uche, O. O. C. (2007c). Preservation of African cultural values in the 21st Century. In N. Ojiakor (Ed.), Salient issues in Nigerian history, culture and socio political development. Enugu: Emmy Angel Publishers.
 Uche, O. O. C. (2009a). Basic belief system in African traditional religion. In F. Aghamelu, & C. Asomugha (Eds.), Readings in African thought and culture. Enugu: Strong Tower.
 Uche, O. O. C. (2009b). Shinto and industrial development in Japan: Lessons for Nigeria. In I. Emejuru, & C. Umezinwa (Eds.), Humanities for tertiary institutions. Aforigwe Ogidi: MasterPRINT.
 Uche, O. O. C (2009c). The socio-religious significance of taboos in Nigeria. In F. Aghamelu, & C. Asomugha (Eds.), Readings in African thought and culture. Enugu: Strong Tower.
 Uche, O. O. C. (2010). Filial piety: A religious synergy for national development in a globalized economy. In A. B. C. Chiegboka, T. C. Utoh-Ezeajugh, & G. I. Udechukwu (Eds.), The humanities and globalization in the 3rd millennium (pp. 292-298). Nimo: Rex Charles and Patrick Ltd.
 Uche, O. O. C., & Grace, A. O. (2010). Divinities and social integration in Africa. Journal of the Society for Arts and Humanities, 5, 122-129.
 Uche, O. O. C. (2011a). Obnoxious labels as a language of class struggle in Nigeria; the Igbo experience: African research review. An International Multi-Disciplinary Journal, 5, 197-211.
 Uche, O. O. C. (2011b). Religion and sustainable development in Nigeria; a functionalist prospective. In A. B. C. Chiegbuka, T. C. Utoh Ezeajuah, & M. S. Ogene (Eds.), The humanities and sustainable development (pp. 350-359). Nimo: Rex Charles and Patrick.
 Uchendu, V. C. (1965). The Igbo of south-eastern Nigeria. Chicago: Holt Reinhart and Winston.