APA (7th ed.) Citation

Douglas, P. H. (1934). The theory of wages. Macmillan.

Chicago Style (17th ed.) Citation

Douglas, Paul Howard. The Theory of Wages. New York: Macmillan, 1934.

MLA (9th ed.) Citation

Douglas, Paul Howard. The Theory of Wages. Macmillan, 1934.

Warning: These citations may not always be 100% accurate.