एपीए उद्धरण

Singhal, R. P. (2009). Elemetns of space physics. PHI Learning.

शिकागो स्टाइल उद्धरण

Singhal, R. P. Elemetns of Space Physics. New Delhi: PHI Learning, 2009.

एमएलए उद्धरण

Singhal, R. P. Elemetns of Space Physics. PHI Learning, 2009.