Mansfield, R. (1993). The visual basic for windows: The illustrated, plain-English encyclopedia to the Windows programming language. version3.0. Ventana Communications Group.
Chicago-viite (17. p.)Mansfield, Richard. The Visual Basic for Windows: The Illustrated, Plain-English Encyclopedia to the Windows Programming Language. Version3.0. Research Triangle Park, NC: Ventana Communications Group, 1993.
MLA-viite (9. p.)Mansfield, Richard. The Visual Basic for Windows: The Illustrated, Plain-English Encyclopedia to the Windows Programming Language. Version3.0. Ventana Communications Group, 1993.
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