Cum sa motivam echipa
Rao Books
Robert Heller
9738175313
72 pagini
An: 2001
Effective Leadership
Dorling Kindersley
Robert Heller
9780751307672
An: 1999
MANAGER S HANDBOOK
Taschen
Robert Heller
ESSENTIAL MANAGER'S MANUAL
KOLON / LOFT
Tim Hindle, Robert Heller
MANAGING FOR EXCELLENCE
Penguin Books
Robert Heller
9781405341561