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. 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.