Douglas, P. H. (1957). The theory of wages: [with a new foreword and the article are there laws of production?] ([Reprint.].). Kelley.
Chicago Style (17th ed.) CitationDouglas, Paul Howard. The Theory of Wages: [with a New Foreword and the Article Are There Laws of Production?]. [Reprint.]. New York, NY: Kelley, 1957.
MLA (9th ed.) CitationDouglas, Paul Howard. The Theory of Wages: [with a New Foreword and the Article Are There Laws of Production?]. [Reprint.]. Kelley, 1957.
Warning: These citations may not always be 100% accurate.