APA aipamena

Hay, R. K. M. (2006). The physiology of crop yield. Oxford: Blackwell Pub.

Chicago Style aipamena

Hay, Robert K. M. The Physiology of Crop Yield. Oxford: Blackwell Pub, 2006.

MLA aipamena

Hay, Robert K. M. The Physiology of Crop Yield. Oxford: Blackwell Pub, 2006.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.