Scott, John
Effective management skills : what is a manager?
Spere British Institute of Management, 1984
 Buku Teks
Downs, Lisa J.
Listening skills training
American Society for Training & Development, 2008
 eBooks
Munter, Mary
Guide to managerial communication: effective business writing and speaking
Prentice-Hall, 1982
 Buku Referensi
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