Calculus l / 
Vicencio, Christopher Santos ; Sanqui, Rommel Cruz ; Amores, Jr. Joy Cosme G. 
 - Mandaluyong City :  Books Atbp. Publishing Corp.,  2019. 
 - viii,126 p.; 25.2cm. 
<br/><br/>includes references 
<br/><br/><label>ISBN: </label>9786214091485 
<br/><br/><label>Dewey Class. No.: </label>Fil 515 V632 2019