एपीए उद्धरण

Wheadon, R. A. (1968). Principles of light and optics, eng.

शिकागो स्टाइल उद्धरण

Wheadon, R. A. Principles of Light and Optics, Eng. 1968.

एमएलए उद्धरण

Wheadon, R. A. Principles of Light and Optics, Eng. 1968.