APA-referens (7:e uppl.)
Donlan, J. C. (2015). Proactive strategies for protecting species: Pre-listing conservation and the Endangered Species Act. University of California Press.
Chicago-referens (17:e uppl.)
Donlan, Josh C. Proactive Strategies for Protecting Species: Pre-listing Conservation and the Endangered Species Act. Oakland, California: University of California Press, 2015.
MLA-referens (9:e uppl.)
Donlan, Josh C. Proactive Strategies for Protecting Species: Pre-listing Conservation and the Endangered Species Act. University of California Press, 2015.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.