Cita APA (7a ed.)

Cullen, D. (2009). Columbine (1. ed.). Twelve.

Cita Chicago Style (17a ed.)

Cullen, David. Columbine. 1. ed. New York [u.a.]: Twelve, 2009.

Cita MLA (9a ed.)

Cullen, David. Columbine. 1. ed. Twelve, 2009.