Cita APA

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

Citación estilo Chicago

Stephens, David W., y J. R. Krebs. Foraging Theory. Princeton, N. Y.: Princeton University, 1986.

Cita MLA

Stephens, David W., y J. R. Krebs. Foraging Theory. Princeton, N. Y.: Princeton University, 1986.