APA (7th ed.) Citation

Proakis, J. G. (1989). Digital communications (2nd ed.). McGraw-Hill.

Chicago Style (17th ed.) Citation

Proakis, John G. Digital Communications. 2nd ed. New York: McGraw-Hill, 1989.

MLA (8th ed.) Citation

Proakis, John G. Digital Communications. 2nd ed. McGraw-Hill, 1989.