APA-čujuhus (7. p.)
Halvorson, M. (2001). Microsoft visual basic 6.0 professional: Step by step. Prentice Hall of India.
Chicago-čujuhus (17. p.)
Halvorson, Michael. Microsoft Visual Basic 6.0 Professional: Step by Step. New Delhi: Prentice Hall of India, 2001.
MLA-čujuhus (9. p.)
Halvorson, Michael. Microsoft Visual Basic 6.0 Professional: Step by Step. Prentice Hall of India, 2001.
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