Pagayon, S. Liza Pagtanaw at pag-unawa : ekonomiks / Liza S. Pagayon , Maria Regina R. Amores , Jerick C. Ferrer . - Makati City : Diwa Learning System ,Inc., 2010 . - 330 pages : illustrations , figures , tables ; 26 cm. includes bibliography and index . ISBN: 978971460137 Subjects--Topical Terms: Economics Dewey Class. No.: 330 / P11p