APA (7th ed.) Citation

Pontryagin, L. S., & Lehmer, E. (1958). Topological groups. Princeton University.

Chicago Style (17th ed.) Citation

Pontryagin, Lev Semenovich, and Emma Lehmer. Topological Groups. New York: Princeton University, 1958.

MLA (9th ed.) Citation

Pontryagin, Lev Semenovich, and Emma Lehmer. Topological Groups. Princeton University, 1958.

Warning: These citations may not always be 100% accurate.