APA (7th ed.) Citation

Pontrjagin, L. S. (1952). Topological groups (Fourth printing.). Princeton University Press.

Chicago Style (17th ed.) Citation

Pontrjagin, Lev S. Topological Groups. Fourth printing. Princeton, New Jersey: Princeton University Press, 1952.

MLA (9th ed.) Citation

Pontrjagin, Lev S. Topological Groups. Fourth printing. Princeton University Press, 1952.