Senatin, Ruby B. <br/><br/>
Essentials of English :  English 101 workbook-textbook / 
Ruby B. Senatin and Fe G. Centenera. 
 - rev.ed. 
 - Mandaluyong City :  National Book Store,  2009. 
 - 118 p. ; 22 cm 
<br/><br/><label>ISBN: </label>9710869760 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Study and teaching