APA (7th ed.) Citation

Pearson, T. G., Burroughs, J., & Forbush, E. H. (1923). Birds of America. The University Society.

Chicago Style (17th ed.) Citation

Pearson, T. Gilbert, John Burroughs, and Edward Howe Forbush. Birds of America. New York: The University Society, 1923.

MLA (9th ed.) Citation

Pearson, T. Gilbert, et al. Birds of America. The University Society, 1923.