The 1978 {one thousand nine hundred and seventy-eight) annual handbook for group facilitators: the seventh annual
Editors, J. William Pfeiffer and John E. Jones
University Associates, 1978
 Buku Teks SO
The 1976 [one thousand nine hundred seventy-six] annual handbook for group facilitators: the fifth annual
Edited by J. William Pfeiffer and John E. Jones
University Associates, 1976
 Buku Teks SO
The 1973 [one thousand nine hundred seventy-three] annual handbook for group facilitators
Edited by John E. Jones and J. William Pfeiffer
University Associates, 1973
 Buku Teks SO
The 1977 [one thousand nine hundred seventy-seven} annual handbook for group facilitators: the sixth annual / John. E. Jones and J. William Pfeiffer
John. E. Jones and J. William Pfeiffer
University Associates, 1977
 Buku Teks SO
The 1979 annual handbook for group facilitators: the eighth annual / John. E. Jones and J. William Pfeiffer
University Associates, 1979
 Buku Teks SO