APA (7th ed.) Citation

Elston, C., & Orrell, S. (1992). WordPerfect 5.1. Pitman.

Chicago Style (17th ed.) Citation

Elston, Carol, and Sue Orrell. WordPerfect 5.1. London: Pitman, 1992.

MLA (9th ed.) Citation

Elston, Carol, and Sue Orrell. WordPerfect 5.1. Pitman, 1992.

Warning: These citations may not always be 100% accurate.