APA (7th ed.) Citation

Sierpinski, W. (1956). General topology (2a. ed.). University of Toronto.

Chicago Style (17th ed.) Citation

Sierpinski, Waclaw. General Topology. 2a. ed. Toronto: University of Toronto, 1956.

MLA (9th ed.) Citation

Sierpinski, Waclaw. General Topology. 2a. ed. University of Toronto, 1956.