Halvorson, M. (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.