Cita APA (7a ed.)

Campbell, M. V. (1990). Teach yourself WordPerfect 5.1. Osborne-McGraw-Hill.

Cita Chicago Style (17a ed.)

Campbell, Mary V. Teach Yourself WordPerfect 5.1. Berkeley [etc.]: Osborne-McGraw-Hill, 1990.

Cita MLA (9a ed.)

Campbell, Mary V. Teach Yourself WordPerfect 5.1. Osborne-McGraw-Hill, 1990.