APA (7th ed.) Citation

MacKinnon, D., McCrum, W., & Sheppard, D. (1990). An introduction to open systems interconnection. Computer Science Press.

Chicago Style (17th ed.) Citation

MacKinnon, Dennis, William McCrum, and Donald Sheppard. An Introduction to Open Systems Interconnection. New York: Computer Science Press, 1990.

MLA (9th ed.) Citation

MacKinnon, Dennis, et al. An Introduction to Open Systems Interconnection. Computer Science Press, 1990.