Covey Stephen R. Tujuh tabiat orang yang amat berkesan Memulihkan etika akhlak Stephen R. Covey; penterjemah Leo Ann Mean; penyunting Adibah Amin - Petaling Jaya, Selangor Prentice Hall c1996 Petaling Jaya, Selangor Prentice Hall c1996 - 366p 22cm. ISBN: 9839236008 Subjects--Topical Terms: Character Success -- Psychological aspects