Cita APA (7th ed.)

Sparks, N. (2007). True believer (1st U.S. pbk. ed.). Warner Books.

Cita Chicago (17th ed.)

Sparks, Nicholas. True Believer. 1st U.S. pbk. ed. New York: Warner Books, 2007.

Cita MLA (9th ed.)

Sparks, Nicholas. True Believer. 1st U.S. pbk. ed. Warner Books, 2007.