APA (7th ed.) Citation

Baldwin, S. P., Oberholser, H. C., Worley, L. G., & Valentine, J. M. (1931). Measurements of birds. [publisher not identified].

Chicago Style (17th ed.) Citation

Baldwin, S. Prentiss, Harry C. Oberholser, Leonard George Worley, and James Manson Valentine. Measurements of Birds. [Cleveland, Ohio]: [publisher not identified], 1931.

MLA (9th ed.) Citation

Baldwin, S. Prentiss, et al. Measurements of Birds. [publisher not identified], 1931.