APA (7th ed.) Citation

Appel, K. I., Schupp, P. E., Ratcliffe, J. G., & Lyndon, R. C. (1984). Contributions to group theory. American Mathematical Society.

Chicago Style (17th ed.) Citation

Appel, Kenneth I., Paul E. Schupp, John G. Ratcliffe, and Roger C. Lyndon. Contributions to Group Theory. Providence, Rhode island: American Mathematical Society, 1984.

MLA (9th ed.) Citation

Appel, Kenneth I., et al. Contributions to Group Theory. American Mathematical Society, 1984.