Heller, Robert, 1932-
Stephen Covey : the bestselling teacher of personal and professional effectiveness / Robert Heller. - London : Dorling Kindersley, 2001. - 112p. : ill. ; 21 cm. - Business masterminds .
0751312789 40.80 Dhs
Covey, Stephen.
Success--Psychological aspects.
Psychologists--United States--Biography.
Stephen Covey : the bestselling teacher of personal and professional effectiveness / Robert Heller. - London : Dorling Kindersley, 2001. - 112p. : ill. ; 21 cm. - Business masterminds .
0751312789 40.80 Dhs
Covey, Stephen.
Success--Psychological aspects.
Psychologists--United States--Biography.