Cita APA (7th ed.)

Acerson, K. L. (1990). WordPerfect 5.1: The complete reference. Osborne McGraw-Hill.

Cita Chicago (17th ed.)

Acerson, Karen L. WordPerfect 5.1: The Complete Reference. Berkeley, Calif: Osborne McGraw-Hill, 1990.

Cita MLA (9th ed.)

Acerson, Karen L. WordPerfect 5.1: The Complete Reference. Osborne McGraw-Hill, 1990.