Covey, Stephen R.
Bucureşti
ALL
1996
9739156762
London
Simon & Schuster
2013
9781471129391
Philadelphia
Running Press
2000
9780762408337
Litera Bucureşti
2020
9786063367281
2016
9786067830316
ALL Educational
9789736847578
2010
9789736847332
Allfa
973947781X
2001
9739477429
2009
9789737242181
1995
2011
9789737243386
2006
9737240537