एपीए उद्धरण

Guggenheimer, H. W. (1977). Differential geometry. Dover Publications.

शिकागो स्टाइल उद्धरण

Guggenheimer, Heinrich W. Differential Geometry. New York: Dover Publications, 1977.

एमएलए उद्धरण

Guggenheimer, Heinrich W. Differential Geometry. Dover Publications, 1977.