APA引文

Simmonds, N. (1979). Principles of crop improvement. London: Longman.

Trích dẫn kiểu Chicago

Simmonds, N.W. Principles of Crop Improvement. London: Longman, 1979.

MLA引文

Simmonds, N.W. Principles of Crop Improvement. London: Longman, 1979.

警告：這些引文格式不一定是100％准確.