Plattner, Francis B.
Improve your communication and speaking skills
ASTD Press, 1997
 eBooks
Andrews, Patricia Hayes
Communication for business and the professions
Waveland, 1986
 Buku Teks SO
Orey, Maureen
Communication skills training
ATD Press, 2015
 Buku Teks SO
McIntosh, Perry
Interpersonal communication skills in the workplace
[American Management Association;, ], 2008
 eBooks
Atwood, Christee Gabour
Presentation skills training
American Society for Training & Development, 2007
 eBooks