APA aipamena

Stephens, D. W. a. K. (1988). Foraging theory. Princeton Univ. Press.

Chicago Style aipamena

Stephens, David W.; and Krebs. Foraging Theory. Princeton, New Jersey: Princeton Univ. Press, 1988.

MLA aipamena

Stephens, David W.; and Krebs. Foraging Theory. Princeton Univ. Press, 1988.