Tingley, Judith C.
Say what you mean get what you want: a businessperson's guide to direct communication
American Management Association;;, 1996
 eBooks
Mortensen, Kurt W.
Persuasion IQ : the 10 skills you need to get exactly what you want
American Management Association, 2008
 eBooks
De Mare, George
Communicating at the top : what you need know about communicating to run an organization / George de Mare
John Wiley , 1979
 Buku Teks
Scott, Kim
Radical candor : how to get what you want by saying what you mean
Pan Books, 2019
 Buku Teks
Kaplan, Burton
Everything you need to know to talk your way to success
Prentice-Hall, 1995
 Buku Teks