APA引文

Johnson, D. G. (1973). World agriculture in disarray. London: MacMillan.

Trích dẫn kiểu Chicago

Johnson, D. Gale. World Agriculture in Disarray. London: MacMillan, 1973.

MLA引文

Johnson, D. Gale. World Agriculture in Disarray. London: MacMillan, 1973.

警告：這些引文格式不一定是100％准確.