Pontryagin, L. S. (1952). Foundations of combinatorial topology. Graylock Press.
Chicagoスタイル(17版)引用形式Pontryagin, L. S. Foundations of Combinatorial Topology. Rochester, N.Y: Graylock Press, 1952.
MLA(9版)引用形式Pontryagin, L. S. Foundations of Combinatorial Topology. Graylock Press, 1952.
警告: この引用は必ずしも正確ではありません.