APA (7th ed.) Citation

Tupper, B. A. (2005). What's Liberalism? American Prospect, 16(7), 4.

Chicago Style (17th ed.) Citation

Tupper, Benjamin A. "What's Liberalism?" American Prospect 16, no. 7 (2005): 4.

MLA (9th ed.) Citation

Tupper, Benjamin A. "What's Liberalism?" American Prospect, vol. 16, no. 7, 2005, p. 4.