APA (7th ed.) Citation

O'Leary, T. J. (1996). WordPerfect 6.1 for Windows. McGraw-Hill.

Chicago Style (17th ed.) Citation

O'Leary, Timothy J. WordPerfect 6.1 for Windows. [San Francisco, Calif.]: McGraw-Hill, 1996.

MLA (9th ed.) Citation

O'Leary, Timothy J. WordPerfect 6.1 for Windows. McGraw-Hill, 1996.