Cita APA (7a ed.)

Beets, W. C. (1982). Multiple cropping and tropical farming systems. Gower Pub.

Cita Chicago Style (17a ed.)

Beets, Willem C. Multiple Cropping and Tropical Farming Systems. England: Gower Pub, 1982.

Cita MLA (9a ed.)

Beets, Willem C. Multiple Cropping and Tropical Farming Systems. Gower Pub, 1982.