Bona, Randy A. Integration of core values: its effects on the attitudes and academic performance of students/ Randy A. Bona. - Philippines: In the Grade School, Inc., c2010-2011. - v59 n1, page 18: illustrations; 28 cm. ISSN: 2094-8042 Subjects--Topical Terms: Values. Dewey Class. No.: DPer 370.105 M72 June 2010-Mar 2011 v. 59 n. 1-10