Caverly, Phillip. <br/><br/>
Introduction to Ada: A Top-Down Approach for Programmers /  

 - 1st ed /  
 - California :   Brooks/Cole Publishing Company. 
 - p239 :  
<br/><br/><label>ISBN: </label>0-534-05820-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Programming Language
<br/><br/><label>Dewey Class. No.: </label>Bv:(P)  / M6