editor, Kirk J. Schneider, James F.T. Bugental, J. Fraser Pierson
Sage Publications, 2001
Buku Referensi
Kirk J. Schneider, J. Fraser Pierson, James F.T. Bugental, editor
Sage Publications, 2001
Buku Teks SO
Cohen, John
George Allen & Unwin, 1958
Buku Teks SO
Tageson, C. William
Dorsey Press, 1982
Buku Teks SO
[edited by] Elaine Lynne La Monica
Wadsworth Health Sciences Division, 1985
Buku Teks SO