Jones, W. I., & Egli, R. (1974). Farming systems in Africa: The Great Lakes highlands of Zaire, Rwanda, and Burundi. Washington, D.C: World Bank.
Παραπομπή Chicago StyleJones, William I., and Roberto Egli. Farming Systems in Africa: The Great Lakes Highlands of Zaire, Rwanda, and Burundi. Washington, D.C: World Bank, 1974.
Παραπομπή MLAJones, William I., and Roberto Egli. Farming Systems in Africa: The Great Lakes Highlands of Zaire, Rwanda, and Burundi. Washington, D.C: World Bank, 1974.
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