Buenaflor, L.E. The art of critical thinking: logic for Filipino students. Rev. ed. / Lionel E. Buenaflor. - Mandaluyong City: Books Atbp. Publishing Corp., c2009. - 287 p.; 23 cm. Includes bibliographical references ISBN: 971-0388-75-2 Subjects--Topical Terms: Critical thinking.Logic. Dewey Class. No.: GC 160 B928 2009