Peurifoy, Reneau Z.
Anxiety, phobias, and panic: a step-by-step programme for regaining control of your life
Warner Books, 2005
 Buku Teks
Intensive one-session treatment of specific phobias
editors, Thompson E. Davis III, Thomas H. Ollendick, Lars-Goran Ost
Springer, 2012
 eBooks
Ryan, Barbara
Minitab handbook : updated for release 16
Brooks/Cole Cengage Learning, 2013
 Buku Teks SO
Stolovitch, Harold D.
Telling ain't training: updated, expanded, and enhanced
American Society for Training & Development, 2011
 eBooks
Measuring roots : an updated approach / Stefano Mancuso, editor
Springer, 2012
 eBooks