Hergert,, D. (1996). Foundations of visual basic 4 programming for Windows 95 (with CD) (3rd ed.). Comdex computer publishing.
Chicago-tyylinen lähdeviittausHergert,, Dougla. Foundations of Visual Basic 4 Programming for Windows 95 (with CD). 3rd ed. New Delhi: Comdex computer publishing, 1996.
MLA-viiteHergert,, Dougla. Foundations of Visual Basic 4 Programming for Windows 95 (with CD). 3rd ed. Comdex computer publishing, 1996.
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