Tracy, Brian
Bucureşti
Business Tech International
2014
9738495857
Ross, Skip
2004
9738495091
Cialdini, Robert B.
2008
9738495474
9738495121
Levinson, Jay Conrad
2005
9738495199
2006
973849530X
Evans, Gail
9738495180
Warren, Arnie
9738495296
Donovan, Jim
2003
9738495059
Girard, Joe
9738495148
9738495245