APA引文

Kendrick, J. W. (1980). Productivity in the United States: Trends and cycles. London: The Johns opkins University Press.

Trích dẫn kiểu Chicago

Kendrick, John W. Productivity in the United States: Trends and Cycles. London: The Johns opkins University Press, 1980.

MLA引文

Kendrick, John W. Productivity in the United States: Trends and Cycles. London: The Johns opkins University Press, 1980.

警告：這些引文格式不一定是100％准確.