Cita APA (7a ed.)

Alexandroff, P. (1961). Elementary concepts of topology. Dover Publications.

Cita Chicago Style (17a ed.)

Alexandroff, Paul. Elementary Concepts of Topology. New York: Dover Publications, 1961.

Cita MLA (9a ed.)

Alexandroff, Paul. Elementary Concepts of Topology. Dover Publications, 1961.