APA (7th ed.) Citation

Shoemaker, P. J., & Vos, T. P. (2009). Gatekeeping theory. Routledge.

Chicago Style (17th ed.) Citation

Shoemaker, Pamela J., and Tim P. Vos. Gatekeeping Theory. New York: Routledge, 2009.

MLA (8th ed.) Citation

Shoemaker, Pamela J., and Tim P. Vos. Gatekeeping Theory. Routledge, 2009.

Warning: These citations may not always be 100% accurate.