APA (7th ed.) Citation

O'Neil, P. V. (1972). Fundamental concepts of topology. Gordon and Breach Science Publishers.

Chicago Style (17th ed.) Citation

O'Neil, Peter V. Fundamental Concepts of Topology. New York: Gordon and Breach Science Publishers, 1972.

MLA (9th ed.) Citation

O'Neil, Peter V. Fundamental Concepts of Topology. Gordon and Breach Science Publishers, 1972.