APA (7th ed.) Citation

Pontryagin, L. S. (1966). Topological groups. Gordon & Breach Science Publishers.

Chicago Style (17th ed.) Citation

Pontryagin, L. S. Topological Groups. New York: Gordon & Breach Science Publishers, 1966.

MLA (9th ed.) Citation

Pontryagin, L. S. Topological Groups. Gordon & Breach Science Publishers, 1966.

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