1. Abumere, S. (1995). The informal sector: Methodological and policy challenges. Departmental Seminar, Department of Geography, University of Ibadan, Ibadan, Nigeria.
2. Adedeji, A. (2001). An assessment of the Ondo State Waste Management Authority in Akure metropolis. B.Sc. Long Essay, Department of Urban and Regional Planning, Obafemi Awolowo University, Ile-Ife, Nigeria.
3. Environmental sanitation on the Lagos Mainland: Problems and possible solution;Adedibu;International Journal of Environmental Studies,1989
4. Adefemi, P. (1980). Situation report on solid waste disposal in Lagos State. Report presented at the refresher course in solid waste management in urban area. The Training Centre, Yaba, Lagos.
5. Afon, A. (2005). Solid waste management in selected cities of Oyo State, Nigeria, Ph.D. dissertation, Department of Urban and Regional Planning, Obafemi Awolowo University, Ile-Ife, Nigeria.