APA (7th ed.) Citation

De Lasala. (1991). WordPerfect power: Word processing made easy (2nd ed.). Windcrest.

Chicago Style (17th ed.) Citation

De Lasala. WordPerfect Power: Word Processing Made Easy. 2nd ed. Blue Ridge Summit, PA: Windcrest, 1991.

MLA (8th ed.) Citation

De Lasala. WordPerfect Power: Word Processing Made Easy. 2nd ed. Windcrest, 1991.

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