Cita APA (7a ed.)

Krumm, R. (1990). Teach yourself...WordPerfect: 5.1 for desktop publishing. Management Information Source, Inc.

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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