Rafferty, J. P. (2011). Conservation and ecology. Britannica Educational Pub. in association with Rosen Educational Services.
Chicago-referens (17:e uppl.)Rafferty, John P. Conservation and Ecology. New York, NY: Britannica Educational Pub. in association with Rosen Educational Services, 2011.
MLA-referens (8:e uppl.)Rafferty, John P. Conservation and Ecology. Britannica Educational Pub. in association with Rosen Educational Services, 2011.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.