The 1979 annual handbook for group facilitators: the eighth annual / John. E. Jones and J. William Pfeiffer
University Associates, 1979
 Buku Teks
The 1977 annual handbook for group facilitators: the sixth annual / John. E. Jones and J. William Pfeiffer
University Associates, 1977
 Buku Teks
The 1976 annual handbook for group facilitators: the fifth annual / Edited by J. William Pfeiffer and John E. Jones
University Associates, 1976
 Buku Teks
The 1978 annual handbook for group facilitators: the seventh annual / Editors, J. William Pfeiffer and John E. Jones
University Associates, 1978
 Buku Teks
The 1973 annual handbook for group facilitators / Edited by John E. Jones and J. William Pfeiffer
University Associates, 1973
 Buku Teks
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