APA Citation

 Bates, R. J. (2007).  Principles of voice & data communications.  McGraw-Hill Irwin.

Chicago Style Citation

 Bates, Regis J.  Principles of Voice & Data Communications.  McGraw-Hill Irwin, 2007.

MLA Citation

 Bates, Regis J.  Principles of Voice & Data Communications.  McGraw-Hill Irwin, 2007.

Warning: These citations may not always be 100% accurate.