(1992). Indigenous integrated farming systems in the Sahel. Washington, D. C: World Bank.
Trích dẫn kiểu ChicagoIndigenous Integrated Farming Systems in the Sahel. Washington, D. C: World Bank, 1992.
MLA引文Indigenous Integrated Farming Systems in the Sahel. Washington, D. C: World Bank, 1992.
警告:这些引文格式不一定是100%准确.