APA (7th ed.) Citation

Ayres, L. P. (1939). Turning points in business cycles. The Macmillan company.

Chicago Style (17th ed.) Citation

Ayres, Leonard Porter. Turning Points in Business Cycles. New York: The Macmillan company, 1939.

MLA (9th ed.) Citation

Ayres, Leonard Porter. Turning Points in Business Cycles. The Macmillan company, 1939.