APA

Proakis J. G., . (2001). Digital Communications. New York: Irvin Mc-Graw-Hill.

Chicago

Proakis John G, . 2001. Digital Communications. New York: Irvin Mc-Graw-Hill.

Harvard

Proakis J. G., . (2001). Digital Communications. New York: Irvin Mc-Graw-Hill.

MLA

Proakis John G, . Digital Communications. New York: Irvin Mc-Graw-Hill. 2001.