Ruthenberg, H. (1971). Farming systems in the tropics. Clarendon Press.
Chicago Style (17th ed.) CitationRuthenberg, Hans. Farming Systems in the Tropics. Clarendon Press, 1971.
MLA (8th ed.) CitationRuthenberg, Hans. Farming Systems in the Tropics. Clarendon Press, 1971.
Warning: These citations may not always be 100% accurate.