APA (7th ed.) Citation

Alexandroff, P. S. (1961). Elementary concepts of topology (1a. ed.). Dover.

Chicago Style (17th ed.) Citation

Alexandroff, Pavel Sergeevich. Elementary Concepts of Topology. 1a. ed. Nueva York: Dover, 1961.

MLA (9th ed.) Citation

Alexandroff, Pavel Sergeevich. Elementary Concepts of Topology. 1a. ed. Dover, 1961.