Παραπομπή APA

Henle, M. (1979). combinatorial introduction to topology. W.H. Freeman and Company.

Παραπομπή Chicago Style

Henle, Michael. Combinatorial Introduction to Topology. San Francisco: W.H. Freeman and Company, 1979.

Παραπομπή MLA

Henle, Michael. Combinatorial Introduction to Topology. W.H. Freeman and Company, 1979.