Merlita Castillo Medallon and Felix M. Calubaquib,  2018. <br/><br/>
Mathematics in the Modern World Worktext / 
Merlita Castillo Medallon. 
 - Intamuros, Manila :  MIndshapers Co., Inc,  2018. 
<br/><br/><label>ISBN: </label>978-621-406-182-2