Boone, S. A. (1986). Radiance from the waters: Ideals of feminine beauty in mende art. New Haven: Yale University Press.
 Bourdillon, M. F. C. (1989). Medicines and symbols. Zambezia, 16, 1.
 Chandler, D. (2012). Semiotics for beginners. An HTML Document Accessed on 2 September 2012.
 Chavunduka, G. L. (1988). African traditional medicine and modern science. Harare: University of Zimbabwe.
 Dukor, M. (2006). Theistic, panpsychic animism of African medicine. Essence, 3, 16.
 Dzobo, N. K. (1992). African symbols and proverbs as sources of knowledge. In K. Wiredu, & K. Gyekye, Person and community: Ghanaian philosophical studies I (Vol. 1). Africa: CRVP Series II.
 Gelfand, M. et al. (1985). The traditional medical practitioner in Zimbabwe. Gweru: Mambo Press.
 Isiguzo, A. I. (2010). African culture and symbolism: A rediscovery of the seam of a fragmented identity.
 Mbiti, J. S. (1991). Introduction to African religion. London: Heinemann.
 Smith, A. K. (2011). Remarks concerning the methodology and symbolism of bon pebble divination. études Mongoles et Sibériennes, Centrasiatiques et Tibétaines, 42.
 Turner, V. W. (1967). Lunda medicine. In Forest of symbols: Aspects of ndembu ritual (p. 316). Ithan: Cornell University Press.
 Vargas, R. E. (2011). Language and thought in Aquinas: From the semantics of being to the epistemology of being. Milwaukee: Marquette University.