Doorways to english language proficiency :  a self-improvement program / 
Galero -Tejero,  Erlinda 
 - Mandaluyong City :  National Book Store,  2008. 
 - xv, 340 p.; 22.cm. 
<br/><br/>Includes bibliography, appendices 
<br/><br/><label>ISBN: </label>9710869213 
<br/><br/><label>Dewey Class. No.: </label>Fil 420.7 T253 2008