Pontryagin, L. S., & Lehmer, E. (1958). Topological groups. Princeton University.
Chicago Style (17th ed.) CitationPontryagin, Lev Semenovich, and Emma Lehmer. Topological Groups. New York: Princeton University, 1958.
MLA (9th ed.) CitationPontryagin, Lev Semenovich, and Emma Lehmer. Topological Groups. Princeton University, 1958.