The Book of Nei Kung / 
By C.K. Chu.  
 - New York :  Sunflower Press,  1985. 
 - 75 p. :  ill. ;  22 cm. 
 - 101+615.825 (NLA) .
<br/><br/><label>ISBN: </label>0961658606 
<br/><br/><label>Universal Decimal Class. No.: </label>101+615.825 (NLA)