Ritchie, David <br/><br/>
Spacewar 

 - 1st ed. 
 - New York :  Atheneum,  1982. 
 - 224 p. 
<br/><br/><label>ISBN: </label>0689112645 
<br/><br/><label>Dewey Class. No.: </label>358.8  / RIT