APA stil citiranja

Sellars, R. W. (1997). Preserving nature in the national parks: Preserving nature in the national parks : a history. New Haven ; London: Yale University Press.

Chicago stil citiranja

Sellars, Richard West. Preserving nature in the national parks: Preserving nature in the national parks : a history. New Haven ; London: Yale University Press, 1997.

MLA stil citiranja

Sellars, Richard West. Preserving nature in the national parks: Preserving nature in the national parks : a history. New Haven ; London: Yale University Press, 1997.