APA引文

Friedman, M. (1980). Free to choose: A personal statement. New York: Avon.

Trích dẫn kiểu Chicago

Friedman, Milton. Free to Choose: A Personal Statement. New York: Avon, 1980.

MLA引文

Friedman, Milton. Free to Choose: A Personal Statement. New York: Avon, 1980.

警告：這些引文格式不一定是100％准確.