APA引文

Drummond, H. E. (2011). Agricultural economics. Upper Saddle River, N.J: Prentice Hall.

Trích dẫn kiểu Chicago

Drummond, H. Evan. Agricultural Economics. Upper Saddle River, N.J: Prentice Hall, 2011.

MLA引文

Drummond, H. Evan. Agricultural Economics. Upper Saddle River, N.J: Prentice Hall, 2011.

警告：這些引文格式不一定是100％准確.