APA (7th ed.) Citation

Parker, C. S. (1991). Computers and their applications (2nd ed.). Dryden Press.

Chicago Style (17th ed.) Citation

Parker, Charles S. Computers and Their Applications. 2nd ed. Chicago: Dryden Press, 1991.

MLA (9th ed.) Citation

Parker, Charles S. Computers and Their Applications. 2nd ed. Dryden Press, 1991.