The ultimate text book. 

 - Quezon City :  Philippine Center for Investigative Journalism,     2000. 
 - 73 p. :  ill. ;  20 cm. 
<br/><br/><label>ISBN: </label>9718686282 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cellular telephones--Humor.--Philippines<br/>Wit and humor.