APA (7th ed.) Citation

Krumm, R. (1990). teach yourself ... WordPerfect 5.1 for desktop publishing. Management Information source, Inc.

Chicago Style (17th ed.) Citation

Krumm, Rob. Teach Yourself ... WordPerfect 5.1 for Desktop Publishing. Oregon: Management Information source, Inc, 1990.

MLA (9th ed.) Citation

Krumm, Rob. Teach Yourself ... WordPerfect 5.1 for Desktop Publishing. Management Information source, Inc, 1990.

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