एपीए उद्धरण

Greg Harvey. (1990). Wordperfect 5.1 instant reference. Singapore: Tech Publications.

शिकागो स्टाइल उद्धरण

Greg Harvey. Wordperfect 5.1 Instant Reference. Singapore: Tech Publications, 1990.

एमएलए उद्धरण

Greg Harvey. Wordperfect 5.1 Instant Reference. Singapore: Tech Publications, 1990.