APA (7th ed.) Zitazioa

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

Chicago Style (17th ed.) Zitazioa

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

MLA (9th ed.) Zitazioa

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