Παραπομπή σε μορφή APA (7η εκδ.)

Krebs, C. J. (1994). Ecology: The experimental analysis of distribution and abundance (Fourth Edition.). Haper & Row Pub.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Krebs, Charles J. Ecology: The Experimental Analysis of Distribution and Abundance. Fourth Edition. New York: Haper & Row Pub, 1994.

Παραπομπή σε μορφή MLA (9th εκδ.)

Krebs, Charles J. Ecology: The Experimental Analysis of Distribution and Abundance. Fourth Edition. Haper & Row Pub, 1994.