APA (7th ed.) Citation

Gardner, E. J., Simmons, M. J., & Snustad, D. P. (1991). Principles of genetics. John Wiley and Sons.

Chicago Style (17th ed.) Citation

Gardner, Eldon John, Michael J. Simmons, and D. Peter Snustad. Principles of Genetics. John Wiley and Sons, 1991.

MLA (8th ed.) Citation

Gardner, Eldon John, et al. Principles of Genetics. John Wiley and Sons, 1991.