APA (7th ed.) Zitazioa

Sowell, T. (2002). Controversial essays. Hoover Institution Press.

Chicago Style (17th ed.) Zitazioa

Sowell, Thomas. Controversial Essays. Stanford, CA: Hoover Institution Press, 2002.

MLA (9th ed.) Zitazioa

Sowell, Thomas. Controversial Essays. Hoover Institution Press, 2002.