Cita APA (7a ed.)

McWilliams, G. M., & Brauning, D. W. (2000). The Birds of Pennsylvania. Cornell University Press.

Cita Chicago Style (17a ed.)

McWilliams, Gerald M., y Daniel W. Brauning. The Birds of Pennsylvania. Ithaca, N.Y.: Cornell University Press, 2000.

Cita MLA (8a ed.)

McWilliams, Gerald M., y Daniel W. Brauning. The Birds of Pennsylvania. Cornell University Press, 2000.