By Covey, Stephen Richards, | Covey, Stephen R..
Barcelona : Ediciones Paidós , 1995 .
480 p. , Translation of: First things first. 23 cm..

By Covey, Stephen Richards, | Covey, Stephen R..
Barcelona Ediciones Paidós 1997 .
481 p. 8449301017

By Covey, Stephen Richards, | Covey, Stephen R..
New York Simon & Schuster 1994 .
373 p. 25 cm..
0671864416

By Covey, Stephen Richards, | Covey, Stephen R..
Barcelona : Paidós , 1999 , Translation of: First things first every day . 0671576976

By Covey, Stephen Richards, | Covey, Stephen R..
Barcelona Paidós 1999 .
434 p. 21 cm..
8449308518

By Covey, Stephen M. R..
Barcelona, España Ediciones Paidós Ibérica 2007 .
492 p. , Translation of: The speed of trust. 22 cm..
9788449320446

By Covey, Stephen M. R..
Barcelona Paidós 2011 .
492 p. , Previously published in Spanish under title: El factor confianza. 22 cm..
9788449326509