APA (7th ed.) Citation

Pontryagin, L. S. (1952). Foundations of combinatorial topology. Graylock Press.

Chicago Style (17th ed.) Citation

Pontryagin, L. S. Foundations of Combinatorial Topology. Rochester, N.Y: Graylock Press, 1952.

MLA (9th ed.) Citation

Pontryagin, L. S. Foundations of Combinatorial Topology. Graylock Press, 1952.