एपीए उद्धरण

Barr, M., & Wells, C. (1985). Toposes,triples and theories. Springer-Verlag.

शिकागो स्टाइल उद्धरण

Barr, Michael, और Charles Wells. Toposes,triples and Theories. New York: Springer-Verlag, 1985.

एमएलए उद्धरण

Barr, Michael, और Charles Wells. Toposes,triples and Theories. Springer-Verlag, 1985.