Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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