Caroselli, Marlene
Leadership skills for managers
McGraw-Hill, 2000
 Buku Teks
Stettner, Morey
Skills for new managers
McGraw-Hill, 2000
 Buku Teks
Rotondo, Jennifer
Presentation skills for managers
McGraw-Hill, 2002
 Buku Teks
Ellis, Carol W.
Management skills for new managers
[American Management Association, ], 2005
 eBooks
Chan, Janis Fisher
Communication skills for managers
[American Management Association;, ], 2002
 eBooks