APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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