एपीए उद्धरण

Zeleny, R. O. (1974). The world book encyclopedia. Chicago: Field Enterprises Educational Corporation.

शिकागो स्टाइल उद्धरण

Zeleny, Robert O. The World Book Encyclopedia. Chicago: Field Enterprises Educational Corporation, 1974.

एमएलए उद्धरण

Zeleny, Robert O. The World Book Encyclopedia. Chicago: Field Enterprises Educational Corporation, 1974.