Cita APA (7th ed.)
ebrary, Inc, Levin, S. A., & Carpenter, S. R. (2009). The Princeton guide to ecology. Princeton University Press.
Cita Chicago (17th ed.)
ebrary, Inc, Simon A. Levin, i Stephen R. Carpenter. The Princeton Guide to Ecology. Princeton: Princeton University Press, 2009.
Cita MLA (9th ed.)
ebrary, Inc, et al. The Princeton Guide to Ecology. Princeton University Press, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.