Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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