एपीए उद्धरण

Behrens, E. (1972). Ring Theory. New York: Academic Press.

शिकागो स्टाइल उद्धरण

Behrens, Ernst-august. Ring Theory. New York: Academic Press, 1972.

एमएलए उद्धरण

Behrens, Ernst-august. Ring Theory. New York: Academic Press, 1972.