Walter A. Ettlin. (1992). WordStar for DOS made easy. McGraw-Hill.
Chicago Edition CitationWalter A. Ettlin. WordStar for DOS Made Easy. New york: McGraw-Hill, 1992.
Cita MLAWalter A. Ettlin. WordStar for DOS Made Easy. McGraw-Hill, 1992.
Atenció: Aquestes cites poden no estar 100% correctes.