Zak, D. (2001). Programming with microsoft visual basic 6.0 enhanced edition. Course Technology.
Cita Chicago (17th ed.)Zak, Diane. Programming with Microsoft Visual Basic 6.0 Enhanced Edition. Cambridge, Mass: Course Technology, 2001.
Cita MLA (9th ed.)Zak, Diane. Programming with Microsoft Visual Basic 6.0 Enhanced Edition. Course Technology, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.