Haywood, Roger, 1939-
All about public relations
McGraw-Hill , 1984
 Buku Teks
Becker, Mortimer, 1920-
Speaking for all occasions
Prentice-Hall, 1949
 Buku Teks
Gamble, Teri Kwal
Public speaking
Allyn and Bacon, 1994
 Buku Teks
Short and long distance signaling
edited by Friedrich Kragler, Martin Hulskamp
Springer, 2012
 eBooks
Haywood, Roger, 1939-
All about public relation : how to build business success on good communications
McGraw-Hill, 1991
 Buku Teks