एपीए उद्धरण

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

शिकागो स्टाइल उद्धरण

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

एमएलए उद्धरण

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