Covey, Stephen R. The 7 habits of highly effective people : restoring the character ethic / Seven habits of highly effective people Stephen R. Covey - [Rev. ed.] - 372 páginas : ilustraciones ISBN: 0743272455 (papel alcalino) 0743269519 (rústica : papel alcalino) Subjects--Topical Terms: Éxito--Aspectos psicológicosCarácter LC Class. No.: BF637.S8 / C68 2004 Dewey Class. No.: 158