Napier, Rodney W.
Advanced games for trainers : powerful interventions for solving team, group, or organizational problems
McGraw-Hill , 1999
 Buku Teks
Corey, Gerald
Theory and practice of group counseling
Brooks/Cole, Cengage Learning, 2012
 Buku Teks
Gulley, Halbert E.
Communication and group process: techniques for improving the quality of small-group communication
Holt, Rinehart and Winston, 1977
 Buku Teks
Carnes, Barbara
Making learning stick: 20 easy and effective techniques that transfer training
American Society for Training & Development, 2010
 eBooks
The 1973 annual handbook for group facilitators / Edited by John E. Jones and J. William Pfeiffer
University Associates, 1973
 Buku Teks