एपीए उद्धरण

Helgason, S. (1962). Differential geometry and symmetric spaces. Academic Press.

शिकागो स्टाइल उद्धरण

Helgason, Sigurdur. Differential Geometry and Symmetric Spaces. New York: Academic Press, 1962.

एमएलए उद्धरण

Helgason, Sigurdur. Differential Geometry and Symmetric Spaces. Academic Press, 1962.