APA (7th ed.) Citation

Krumm, R. (1987). Wordperfect 4.2 power tools. Management Information Source.

Chicago Style (17th ed.) Citation

Krumm, Robert. Wordperfect 4.2 Power Tools. Portland, OR: Management Information Source, 1987.

MLA (9th ed.) Citation

Krumm, Robert. Wordperfect 4.2 Power Tools. Management Information Source, 1987.

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