APA (7th ed.) Citation

Plummer, R. (2009). Outdoor recreation: An introduction. Routledge.

Chicago Style (17th ed.) Citation

Plummer, Ryan. Outdoor Recreation: An Introduction. New York ; London: Routledge, 2009.

MLA (9th ed.) Citation

Plummer, Ryan. Outdoor Recreation: An Introduction. Routledge, 2009.