Membina ketahanan diri / George Leonard...[et al.]. ; editor, Firdhaus Md. Yatim. - Batu Caves : Thinker's Library, 1997. - viii, 120 p. ; 22 cm. - Siri motivasi . ISBN: 9676902551 Subjects--Topical Terms: Personality and motivation.Self-confidence.Self-management (Psychology) Dewey Class. No.: 155.25 / MEM