APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Boucke, O. Fred. Principles of Economics. New York: The Macmillan company, 1925.

MLA (9th ed.) Citation

Boucke, O. Fred. Principles of Economics. The Macmillan company, 1925.

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