Cita APA (7th ed.)
Halvorson, M. (2010). Visual basic 2010 step by step. Microsoft press.
Cita Chicago (17th ed.)
Halvorson, Michael. Visual Basic 2010 Step by Step. Redmond: Microsoft press, 2010.
Cita MLA (9th ed.)
Halvorson, Michael. Visual Basic 2010 Step by Step. Microsoft press, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.