Style de citation APA

Powers, L. E. (1999). Ecological principles of agriculture. Africa: Delmar / Thomson Learning.

Style de citation Chicago

Powers, Laura E. Ecological Principles of Agriculture. Africa: Delmar / Thomson Learning, 1999.

Style de citation MLA

Powers, Laura E. Ecological Principles of Agriculture. Africa: Delmar / Thomson Learning, 1999.

Attention : ces citations peuvent ne pas être correctes à 100%.