Cita APA (7th ed.)

Roughgarden, J., May, R. M., & Levin, S. A. (1989). Perspectives in ecological theory. Princeton University Press.

Cita Chicago (17th ed.)

Roughgarden, Jonathan, Robert M. May, i Simon A. Levin. Perspectives in Ecological Theory. Princeton, New Jersey: Princeton University Press, 1989.

Cita MLA (9th ed.)

Roughgarden, Jonathan, et al. Perspectives in Ecological Theory. Princeton University Press, 1989.