APA (7th ed.) Citation

Christopher, Saliga, & Feigenbaum. (1991). DOS 5: The basics. John Wiley & Sons.

Chicago Style (17th ed.) Citation

Christopher, Saliga, and Feigenbaum. DOS 5: The Basics. New York: John Wiley & Sons, 1991.

MLA (8th ed.) Citation

Christopher, et al. DOS 5: The Basics. John Wiley & Sons, 1991.