Cita APA (7a ed.)

Shoemaker, P. J. (1991). Gatekeeping Communication concepts.

Cita Chicago Style (17a ed.)

Shoemaker, Pamela J. "Gatekeeping." Communication Concepts 1991.

Cita MLA (8a ed.)

Shoemaker, Pamela J. "Gatekeeping." Communication Concepts, 1991.