APA (7th ed.) Citation

Freeman, R. L. (2001). Practical data communications (2nd ed.). John Wiley.

Chicago Style (17th ed.) Citation

Freeman, Roger L. Practical Data Communications. 2nd ed. New York: John Wiley, 2001.

MLA (9th ed.) Citation

Freeman, Roger L. Practical Data Communications. 2nd ed. John Wiley, 2001.