एपीए उद्धरण

Subramaniam,H. (2007). Spherical trigonometry. Vijaya publications.

शिकागो स्टाइल उद्धरण

Subramaniam,H. Spherical Trigonometry. Mumbai: Vijaya publications, 2007.

एमएलए उद्धरण

Subramaniam,H. Spherical Trigonometry. Vijaya publications, 2007.