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 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 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 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 1974 (one thousand nine hundred seventy four) annual handbook for group facilitators
Edited by J. William Pfeiffer and John E. Jones
University Associates, 1974
 Buku Teks SO