APA (7th ed.) Citation

Douglas, P. H. (1930). Real wages in the United States, 1890-1926. Houghton.

Chicago Style (17th ed.) Citation

Douglas, Paul H. Real Wages in the United States, 1890-1926. Boston, New York: Houghton, 1930.

MLA (9th ed.) Citation

Douglas, Paul H. Real Wages in the United States, 1890-1926. Houghton, 1930.