Canonigo, C.S. <br/><br/>
Book of tongue twisters for english teachers & students / 
C.S. Canonigo. 
 - enlarged 
 - San Juan City, Metro Manila :  MG Reprographics,  2008. 
 - 232 p.:  18 cm. 
<br/><br/><br/>English 
<br/><br/><label>ISBN: </label>971-8905-00-6 
<br/><br/><label>LC Class. No.: </label>398.8 B64