APA (7th ed.) Citation

Boucke, O. F. (1925). Principles of economics. Macmillan.

Chicago Style (17th ed.) Citation

Boucke, Oswald Fred. Principles of Economics. New York: Macmillan, 1925.

MLA (9th ed.) Citation

Boucke, Oswald Fred. Principles of Economics. Macmillan, 1925.

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