Badayos, Paquito B. Metodolohiya sa pagtuturo ng wika : mga teorya, simulain at istratehiya / Paquito B. Badayos, Ph. D. - Metro Manila : Grandbooks Pub, c2012. - 424 p. ; 26 cm. Includes bibliography. ISBN: 9717250502 Subjects--Topical Terms: Language and languages--Study and teaching--Philippines.