APA引文

Hopkins, W. S. (1948). Labor in the American economy. New York: McGraw-Hill Book Company, Inc.

Trích dẫn kiểu Chicago

Hopkins, William Stehen. Labor in the American Economy. New York: McGraw-Hill Book Company, Inc, 1948.

MLA引文

Hopkins, William Stehen. Labor in the American Economy. New York: McGraw-Hill Book Company, Inc, 1948.

警告：这些引文格式不一定是100％准确.