Underdahl, B. (1996). Excel expert solutions. Que Corp..
Cita Chicago (17th ed.)Underdahl, Brian. Excel Expert Solutions. Indianapolis, IN: Que Corp., 1996.
Cita MLA (8th ed.)Underdahl, Brian. Excel Expert Solutions. Que Corp., 1996.
Atenció: Aquestes cites poden no estar 100% correctes.