Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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