Say, M. G. <br/><br/>
Alternating current machines / 
M. G. Say. 
 - 4th ed. 
 - London :  The English Language Book Society,  1976. 
 - 543 p. :  ill. ;  23 cm. 
<br/><br/> First - 3rd ed. published under title: The performance and design of alternating current machines. 
<br/><br/>Includes bibliographical references (p. 526-532) and index. 
<br/><br/><label>ISBN: </label>0273007424 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electric machinery--Alternating current.<br/>Electric transformers.<br/>Electric motors, Alternating current.