APA (7th ed.) Citation

Douglas, P. H., & Director, A. (1931). The problem of unemployment. The Macmillan company.

Chicago Style (17th ed.) Citation

Douglas, Paul H., and Aaron Director. The Problem of Unemployment. New York: The Macmillan company, 1931.

MLA (9th ed.) Citation

Douglas, Paul H., and Aaron Director. The Problem of Unemployment. The Macmillan company, 1931.