Ziglar, Zig
Bucureşti
Curtea Veche
2007
9789736694950
Litera Bucureşti
2020
9786063346637
Curtea Veche Publishing
2010
9789736699160
2001
9738120462
2000
9738120039
Editura Amaltea
2005
9737780337
2002
9738120721
Business Tech International Press
1998
9739830935
9789736694035
9738120160
2012
9786065883055
9739397328
9789736693175