O'Leary, T. J., O'Leary, L. I., & Williams, B. K. (1995). McGraw-Hill computing essentials (Annual ed., 1995-1996.). McGraw-Hill.

O'Leary, Timothy J., Linda I. O'Leary, and Brian K. Williams. McGraw-Hill Computing Essentials. Annual ed., 1995-1996. New York: McGraw-Hill, 1995.

O'Leary, Timothy J., et al. McGraw-Hill Computing Essentials. Annual ed., 1995-1996. McGraw-Hill, 1995.