Cita APA (7th ed.)

Cueva, E., & Saint-Bois, A. (1991). WordPerfect 5.1. Anaya Multimedia.

Cita Chicago (17th ed.)

Cueva, Esteban, i Antonio Saint-Bois. WordPerfect 5.1. Madrid: Anaya Multimedia, 1991.

Cita MLA (9th ed.)

Cueva, Esteban, i Antonio Saint-Bois. WordPerfect 5.1. Anaya Multimedia, 1991.