Federal Democratic Republic of Ethiopia Ministry of Education (1994) Education and Training Policy. S. George Printing Press, Addis Ababa.
 Federal Democratic Republic of Ethiopia Ministry of Education (2008) General Education Quality Improvement Package (GEQIP).
 Federal Democratic Republic of Ethiopia Ministry of Education (2012) National Professional Standard for School Principals. MoE, Addis Ababa.
 Pont, B., Nusha, D. and Morman, H. (2008) Improving School Leadership Vol. 1: Policy and Practice OECD. Source
 Yunas, M. and Iqbal, M. (2013) Dimensions of Instructional Leadership Roles of Principals. Interdisciplinary Journal of Contemporary Research in Business, 4, 629-637.
 UNESCO (2005) School Management a Training Manual for Educational Management. UNESCO International Institute for Capacity Building in Africa.
 Taole, M. (2013) Exploring Principals Role in Providing Instructional Leadership in Rural High Schools in South Africa. Studies of Tribes and Tribals, 11, 75-82.
 Federal Democratic Republic of Ethiopia Ministry of Education (2010) Education Sector Development Program IV (ESDP IV) 2010/2011-2014/2015 Action Plan.
 Tedla, B.A. (2012) Instructional Leadership and School Climate: A Case Study of Secondary School in Eriteria. Literacy Information and Computer Education Journal Special Issues, 1, 755-764.
 Mitchell, C. and Castle, J.B. (2005) The Instructional Role of Elementary School Principals. Canadian Journal of Education, 28, 409-433.
 Southworth, G. (2002) Instructional Leadership in Schools: Reflections and Empirical Evidence. School Leadership & Management, 22, 73-91.
 Blasé, J. and Blasé, J. (2000) Effective Instructional Leadership: Teachers’ Perspectives on How Principals Promote Teaching and Learning in Schools. Journal of Educational Administration, 38, 130-141.
 Mestry, R. (2013) The Innovative Role of the Principal as Instructional Leader: A Prerequisite for High Student Achievement? International Proceedings of Economics Development & Research, 60, 119-123.
 Bush, T. and Glover, D. (2003) School Leadership: Concepts and Evidence. A Review of Literature Carried out for National College for School Leadership. National College for School Leadership, Nottingham.
 Ylimakia, R., Jacobsona, S.L. and Drysdaleb, L. (2007) Making a Difference in Challenging, High-Poverty Schools: Successful Principals in the USA, England, and Australia. School Effectiveness and School Improvement, 18, 361-381.
 Hallinger, P. and Murphy, J. (1985) Assessing the Instructional Management Behaviour of Principals. The Elementary School Journal, 86, 217-247.
 Hallinger, P. (2009) Leadership for 21st Century Schools: From Instructional Leadership to Leadership for Learning. Public Lecture Series of the Hong Kong Institute of Education on 23 September 2009.
 Hallinger, P. (2010) Geteways to Leading Learning Leading Educational Change. APCLC Monograph Series, 2010, No. 1.
 Kruger, A.G. (2003) Instructional Leadership: The Impact on the Culture of Teaching and Learning in Two Effective Secondary Schools. South African Journal of Education, 23, 206-211.
 Du Four, R. and Berkey, T. (1995) The Principal as Staff Developer. Journal of Staff Development, 16, 2-6.
 Phillips, J.A. (2014) Manager-Administrator to Instructional Leader Shift in the Role of the School Principal.
 Dawson, C. (2007) A Practical Guide to Research Methods. 3rd Edition, Spring Hill House, Oxford.
 Bogdan, R.C. and Biklen, S.N. (2007) Qualitative Research for Education an Introduction to Theories and Methods. 5th Edition, Pearson, Boston.
 Cohen, L., Manion, L. and Morrison, K. (2000) Research Methods in Education. 5th Edition, Routledge Falmer, London.
 Creswell, J.W. (2009) Research Design Qualitative, Quantitative and Mixed Methods Approaches. 3rd Edition, Sage, Los Angeles.
 Neuman, W.L. (2007) Basics of Social Research Qualitative and Quantitative Approaches. Allyn and Bacon, Boston.
 Marks, M. and Printy, M. (2003) Principal Leadership and School Performance: An Integration of Transformational and Instructional Leadership. Educational Administration Quarterly, 39, 370-397.
 Andrews, R.L., Basom, R.M. and Basom, M. (1994) Instructional Leadership: Supervision That Makes a Difference. Theory in Practice, 30, 97-101.
 Bush, T. (2008) Leadership and Management in Education. Sage, Los Angeles.