Maran, R. (1989). Maran Graphics' simplified computer guide WordPerfect version 5.1. Maran Graphics.
Cita Chicago (17th ed.)Maran, Richard. Maran Graphics' Simplified Computer Guide WordPerfect Version 5.1. Mississauga, Ont: Maran Graphics, 1989.
Cita MLA (9th ed.)Maran, Richard. Maran Graphics' Simplified Computer Guide WordPerfect Version 5.1. Maran Graphics, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.