Παραπομπή σε μορφή APA (7η εκδ.)

Krebs, C. J. (1994). Ecology: The experimental analysis of distribution and abundance (4th ed.). Harper Collins College Publishers.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Krebs, Charles J. Ecology: The Experimental Analysis of Distribution and Abundance. 4th ed. New York: Harper Collins College Publishers, 1994.

Παραπομπή σε μορφή MLA (8th εκδ.)

Krebs, Charles J. Ecology: The Experimental Analysis of Distribution and Abundance. 4th ed. Harper Collins College Publishers, 1994.