Gurewich, N., & Gurewich, O. (1995). Master Visual Basic 4. Sama Publishing.
Cita Chicago (17th ed.)Gurewich, Nathan, i Ori Gurewich. Master Visual Basic 4. Indianapolis: Sama Publishing, 1995.
Cita MLA (9th ed.)Gurewich, Nathan, i Ori Gurewich. Master Visual Basic 4. Sama Publishing, 1995.
Atenció: Aquestes cites poden no estar 100% correctes.