APA (7th ed.) Citation

Pontryagin, L. S., Postnikov, M. M., Wu, W., & Bokstrein, M. F. (1959). Four Papers on Topology. American Mathematical Society.

Chicago Style (17th ed.) Citation

Pontryagin, Lev Semenovich, M. M. Postnikov, Wen-tsün Wu, and M. F. Bokstrein. Four Papers on Topology. Providence, Rhode Island: American Mathematical Society, 1959.

MLA (9th ed.) Citation

Pontryagin, Lev Semenovich, et al. Four Papers on Topology. American Mathematical Society, 1959.