APA (7th ed.) Citation

Ruthenberg, H. (1980). Farming systems in the tropics / by Hans Ruthenberg (3rd ed.). Oxford University Press.

Chicago Style (17th ed.) Citation

Ruthenberg, Hans. Farming Systems in the Tropics / by Hans Ruthenberg. 3rd ed. Oxford University Press, 1980.

MLA (9th ed.) Citation

Ruthenberg, Hans. Farming Systems in the Tropics / by Hans Ruthenberg. 3rd ed. Oxford University Press, 1980.

Warning: These citations may not always be 100% accurate.