APA引文

Friedman, M. (1953). Essays in positive economics. Chicago: The University of Chicago Press.

Trích dẫn kiểu Chicago

Friedman, Milton. Essays in Positive Economics. Chicago: The University of Chicago Press, 1953.

MLA引文

Friedman, Milton. Essays in Positive Economics. Chicago: The University of Chicago Press, 1953.

警告：这些引文格式不一定是100％准确.