Cita APA (7th ed.)

Shoemaker, P., & Vos, T. (2009). Gatekeeping theory (1a. ed.). Routledge.

Cita Chicago (17th ed.)

Shoemaker, Pamela, i Tim Vos. Gatekeeping Theory. 1a. ed. Nueva York: Routledge, 2009.

Cita MLA (9th ed.)

Shoemaker, Pamela, i Tim Vos. Gatekeeping Theory. 1a. ed. Routledge, 2009.