Hay, R. K. M. (2006). The physiology of crop yield. Oxford: Blackwell Pub.
Trích dẫn kiểu ChicagoHay, Robert K. M. The Physiology of Crop Yield. Oxford: Blackwell Pub, 2006.
MLA引文Hay, Robert K. M. The Physiology of Crop Yield. Oxford: Blackwell Pub, 2006.
警告：這些引文格式不一定是100％准確.