APA (7th ed.) Citation

Deitel, H. M., Deitel, & Nieto. (1999). Visual basic 6: How to program. Prentice-Hall.

Chicago Style (17th ed.) Citation

Deitel, Harvey M., Deitel, and Nieto. Visual Basic 6: How to Program. New Jersey: Prentice-Hall, 1999.

MLA (8th ed.) Citation

Deitel, Harvey M., et al. Visual Basic 6: How to Program. Prentice-Hall, 1999.