APA (7th ed.) Citation

Spear, R. J., & Spear, T. M. (1997). Introduction to computer programming in Visual Basic 6.0. Dryden Press.

Chicago Style (17th ed.) Citation

Spear, Robert J., and Timothy M. Spear. Introduction to Computer Programming in Visual Basic 6.0. Fort Worth: Dryden Press, 1997.

MLA (9th ed.) Citation

Spear, Robert J., and Timothy M. Spear. Introduction to Computer Programming in Visual Basic 6.0. Dryden Press, 1997.