एपीए उद्धरण

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

शिकागो स्टाइल उद्धरण

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

एमएलए उद्धरण

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