Παραπομπή APA

Emlen, J. M. (1977). Ecology: An evolutionary approach. Addison Wesley.

Παραπομπή Chicago Style

Emlen, J Merritt. Ecology: An Evolutionary Approach. Reading: Addison Wesley, 1977.

Παραπομπή MLA

Emlen, J Merritt. Ecology: An Evolutionary Approach. Addison Wesley, 1977.