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.
Atenció: Aquestes cites poden no estar 100% correctes.