APA (7th ed.) Citation

McWilliams, G. M., & Brauning, D. W. (2000). The birds of Pennsylvania. Comstock Pub. Associates.

Chicago Style (17th ed.) Citation

McWilliams, Gerald M., and Daniel W. Brauning. The Birds of Pennsylvania. Ithaca, N.Y.: Comstock Pub. Associates, 2000.

MLA (9th ed.) Citation

McWilliams, Gerald M., and Daniel W. Brauning. The Birds of Pennsylvania. Comstock Pub. Associates, 2000.