Citazione APA

Rafferty, J. P. (2011). Conservation and ecology. Britannica Educational Pub. in association with Rosen Educational Services.

Stile di citazione Chicago

Rafferty, John P. Conservation and Ecology. New York, NY: Britannica Educational Pub. in association with Rosen Educational Services, 2011.

Citazione MLA

Rafferty, John P. Conservation and Ecology. Britannica Educational Pub. in association with Rosen Educational Services, 2011.