Flynn, Ida M. <br/><br/>
Understanding opening systems 
Ida M. Flynn, Ann Mclver McHoes. 
 - 3rd  ed. 
 - Australia  Brooks Press  [n.d.] 
 - xviii, 462p., 25cm. 
<br/><br/><label>ISBN: </label>981-240-069-9. 
<br/><br/><label>Dewey Class. No.: </label>005.43  / F59U