Ellingsworth, Huber W.
Speech and social action : a strategy of oral communication
Prentice-Hall, 1967
 Buku Teks
Plattner, Francis B.
Improve your communication and speaking skills
American Society for Training and Development Press, 1997
 eBooks
Piskurich, George M.
Trainer basics
[American Society for Training & Development Press;American Society for Training & Development Press, American Society for Training & Development Press], 2003
 eBooks
Carliner, Saul
Training design basics
American Society for Training and Development Press, 2003
 eBooks
Carliner, Saul
Training design basics
American Society for Training & Development, 2003
 eBooks