Visual Basic Programming
- Deitel, H.M.(1999). Visual Basic 6 How to Program [1]. New Jersey. Prentice Hall. (TSDAS Digital Library : QA76.73.B3 Dei)
- Schneider, D.I.(2004). An Introduction to Programming with Visual 6.0 [2]. (TSDAS Digital Library : QA76.73 B3Sch)