Worktext in College Trigonometry. / 
Alleli C. Domingo...[et al.]. 
 - Quezon City :  C&E Publishing,  2008. 
 - 144 p : figs 
<br/><br/><label>ISBN: </label>978-971-584-752-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry