Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

Pontryagin, L. S. Foundations of Combinatorial Topology. Rochester, New York: Graylock, 1952.

Cita MLA (9a ed.)

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