Maran, R. (1989). Maran Graphics' simplified computer guide WordPerfect version 5.1. Maran Graphics.
Citazione stile Chigago Style (17a edizione)Maran, Richard. Maran Graphics' Simplified Computer Guide WordPerfect Version 5.1. Mississauga, Ont: Maran Graphics, 1989.
Citatione MLA (9a ed.)Maran, Richard. Maran Graphics' Simplified Computer Guide WordPerfect Version 5.1. Maran Graphics, 1989.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.