APA (7th ed.) Zitazioa

Gaal, S. A. (1964). Point set topology. Academic Press.

Chicago Style (17th ed.) Zitazioa

Gaal, Steven A. Point Set Topology. Nueva York: Academic Press, 1964.

MLA (9th ed.) Zitazioa

Gaal, Steven A. Point Set Topology. Academic Press, 1964.