APA引文

Hopkins, J. A. (1973). Changing technology and employment in agriculture. New York: Da Capo Press.

Trích dẫn kiểu Chicago

Hopkins, John A. Changing Technology and Employment in Agriculture. New York: Da Capo Press, 1973.

MLA引文

Hopkins, John A. Changing Technology and Employment in Agriculture. New York: Da Capo Press, 1973.

警告：这些引文格式不一定是100％准确.