1. "Ujamaa: The Basis of African Socialism" by Julius K. Nyerere 2. "The Emergence of African Capitalism: The Anstey Memorial Lectures in the University of Kent at Canterbury 1977" edited by Michael Crowder 3. "The Cooperative Movement in East Africa: Past, Present and Future" by Samuel M. Makinda 4. "Ujamaa and Rural Development in Tanzania" by Colin Leys and John S. Saul