APA način citiranja (7. izdanje)

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

Čikaški stil citiranja (17. izdanje)

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

MLA način citiranja (9. izdanje)

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