Frenzel Jr. E. Louis <br/><br/>
Principle of Electronic Communication Systems: 

 - 5th ed. 
 - New York:  McGraw Hill,  2023. 
 - 925p.:  ill.; 
<br/><br/>Includes Index. 
<br/><br/><label>ISBN: </label>9781260597899 
<br/><br/><label>LC Class. No.: </label>TK5101  / fre2023