APA引文

Elkan, W. (1973). An Introduction to development economics. New York: Penguin Books.

Trích dẫn kiểu Chicago

Elkan, Walter. An Introduction to Development Economics. New York: Penguin Books, 1973.

MLA引文

Elkan, Walter. An Introduction to Development Economics. New York: Penguin Books, 1973.

警告：這些引文格式不一定是100％准確.