APA (7th ed.) Citation

Hopkins, W. S. (1948). Labor in the American economy (1. ed.). McGraw-Hill.

Chicago Style (17th ed.) Citation

Hopkins, William S. Labor in the American Economy. 1. ed. New York [u.a.]: McGraw-Hill, 1948.

MLA (9th ed.) Citation

Hopkins, William S. Labor in the American Economy. 1. ed. McGraw-Hill, 1948.