एपीए उद्धरण

Cheronis, N. D. The study of the physical world. [Boston],1958: Houghton Mifflin.

शिकागो स्टाइल उद्धरण

Cheronis, Nicholas D. The Study of the Physical World. [Boston],1958: Houghton Mifflin.

एमएलए उद्धरण

Cheronis, Nicholas D. The Study of the Physical World. [Boston],1958: Houghton Mifflin.