APA

Douglas P. H., . (1934). The theory wages. New York: The Macmillan.

Chicago

Douglas Paul H, . 1934. The theory wages. New York: The Macmillan.

Harvard

Douglas P. H., . (1934). The theory wages. New York: The Macmillan.

MLA

Douglas Paul H, . The theory wages. New York: The Macmillan. 1934.