APA (7th ed.) Citation

Flegg, J., Hosking, E. J., & Hosking, D. (1991). Animal communication. [publisher not identified].

Chicago Style (17th ed.) Citation

Flegg, Jim, Eric John Hosking, and David Hosking. Animal Communication. Newington: [publisher not identified], 1991.

MLA (9th ed.) Citation

Flegg, Jim, et al. Animal Communication. [publisher not identified], 1991.