Gurewich, N., & Gurewich, O. (1995). Master Visual Basic 4. Sama Publishing.
Tohutoru Kātū Chicago (17th ed.)Gurewich, Nathan, me Ori Gurewich. Master Visual Basic 4. Indianapolis: Sama Publishing, 1995.
Tohutoro MLA (9th ed.)Gurewich, Nathan, me Ori Gurewich. Master Visual Basic 4. Sama Publishing, 1995.
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