Henle, M. (1979). combinatorial introduction to topology. W.H. Freeman and Company.
शिकागो स्टाइल उद्धरणHenle, Michael. Combinatorial Introduction to Topology. San Francisco: W.H. Freeman and Company, 1979.
एमएलए उद्धरणHenle, Michael. Combinatorial Introduction to Topology. W.H. Freeman and Company, 1979.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.