APA (7th ed.) Citation

Pontryagin, L. S. (1966). Topological groups (2a. ed.). Gordon and Breach.

Chicago Style (17th ed.) Citation

Pontryagin, L. S. Topological Groups. 2a. ed. Nueva York: Gordon and Breach, 1966.

MLA (9th ed.) Citation

Pontryagin, L. S. Topological Groups. 2a. ed. Gordon and Breach, 1966.