The 1978 annual handbook for group facilitators: the seventh annual / Editors, J. William Pfeiffer and John E. Jones
Editors, J. William Pfeiffer and John E. Jones
University Associates, 1978
 Buku Teks
The 1976 annual handbook for group facilitators: the fifth annual / Edited by J. William Pfeiffer and John E. Jones
Edited by J. William Pfeiffer and John E. Jones
University Associates, 1976
 Buku Teks
The 1979 annual handbook for group facilitators: the eighth annual / John. E. Jones and J. William Pfeiffer
University Associates, 1979
 Buku Teks
The 1973 annual handbook for group facilitators / Edited by John E. Jones and J. William Pfeiffer
Edited by John E. Jones and J. William Pfeiffer
University Associates, 1973
 Buku Teks
The 1974 annual handbook for group facilitators / Edited by J. William Pfeiffer and John E. Jones
Edited by J. William Pfeiffer and John E. Jones
University Associates, 1974
 Buku Teks