APA (7th ed.) Zitazioa

Stephens, D. W., & Krebs, J. R. (1986). Foraging theory. Princeton University Press.

Chicago Style (17th ed.) Zitazioa

Stephens, David W., eta John R. Krebs. Foraging Theory. Princeton: Princeton University Press, 1986.

MLA (9th ed.) Zitazioa

Stephens, David W., eta John R. Krebs. Foraging Theory. Princeton University Press, 1986.