APA (7th ed.) Citation

Stephens, D. W., & Krebs, J. R. (1986). Foraging theory. Princeton Univ. Pr.

Chicago Style (17th ed.) Citation

Stephens, David W., and John R. Krebs. Foraging Theory. Princeton, NJ: Princeton Univ. Pr, 1986.

MLA (9th ed.) Citation

Stephens, David W., and John R. Krebs. Foraging Theory. Princeton Univ. Pr, 1986.