Bradley, J. C. (1996). QuickBasic and QBasic using modular structure with visual basic. IRWIN.
Lua i Stíl Chicago (17ú heag.)Bradley, Julia C. QuickBasic and QBasic Using Modular Structure with Visual Basic. Chicago: IRWIN, 1996.
Lua MLA (9ú heag.)Bradley, Julia C. QuickBasic and QBasic Using Modular Structure with Visual Basic. IRWIN, 1996.
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