Halvorson Michael. (1998). Microsoft Visual Basic 6.0 Professional: Step by step. Microsoft Press.
Chicago Style (17th ed.) CitationHalvorson Michael. Microsoft Visual Basic 6.0 Professional: Step by Step. Microsoft Press, 1998.
MLA (8th ed.) CitationHalvorson Michael. Microsoft Visual Basic 6.0 Professional: Step by Step. Microsoft Press, 1998.
Warning: These citations may not always be 100% accurate.