Buenavista, Regina C. Mga Gawain tungo sa Pag-unlad 5/ Regina C. Buenavista. - Quezon City: St. Augustine Publications, Inc., 2020. - 254 pages: text, illustrations, tables; 27 cm. Tagalog ISBN: 9786218113398 Subjects--Personal Names: Dewey Class. No.: 499 / B567m