APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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

Let op: Deze citaties zijn niet altijd 100% accuraat.