Cita APA

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

Citación estilo Chicago

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

Cita MLA

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