APA aipamena

Powers, L. E., & McSorley, R. (2000). Ecological principles of agriculture. Delmar.

Chicago Style aipamena

Powers, Laura E., and Robert McSorley. Ecological Principles of Agriculture. Africa: Delmar, 2000.

MLA aipamena

Powers, Laura E., and Robert McSorley. Ecological Principles of Agriculture. Delmar, 2000.