Spear, R. J., & Spear, T. M. (1997). Introduction to computer programming in Visual Basic 6.0. Dryden Press.
芝加哥风格引文Spear, Robert J., 与 Timothy M. Spear. Introduction to Computer Programming in Visual Basic 6.0. Fort Worth: Dryden Press, 1997.
MLA引文Spear, Robert J., 与 Timothy M. Spear. Introduction to Computer Programming in Visual Basic 6.0. Dryden Press, 1997.
警告：这些引文格式不一定是100％准确.