Sawyer, S. C., Hutchinson, S. E., & Williams, B. K. (1999). Using information technology: Practical introduction to computers & communications (Third edition.). Irwin/ McGraw-Hill.

Sawyer, Stacey C., Sarah E. Hutchinson, and Brian K. Williams. Using Information Technology: Practical Introduction to Computers & Communications. Third edition. Boston: Irwin/ McGraw-Hill, 1999.

Sawyer, Stacey C., et al. Using Information Technology: Practical Introduction to Computers & Communications. Third edition. Irwin/ McGraw-Hill, 1999.