Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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