APA (7th ed.) Citation

SIMPSON. (1990). Mastering wordperfect 5.1. Tech Publ.

Chicago Style (17th ed.) Citation

SIMPSON. Mastering Wordperfect 5.1. Singapore: Tech Publ, 1990.

MLA (8th ed.) Citation

SIMPSON. Mastering Wordperfect 5.1. Tech Publ, 1990.

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