Παραπομπή APA

Seifert H Threlfall W. (1980). Text book of Topology. Academic press.

Παραπομπή Chicago Style

Seifert H Threlfall W. Text Book of Topology. New York: Academic press, 1980.

Παραπομπή MLA

Seifert H Threlfall W. Text Book of Topology. Academic press, 1980.