editor, Kirk J. Schneider, James F.T. Bugental, J. Fraser Pierson
Sage Publications, 2001
Buku Referensi
DeCarvalho, Roy Jose
Praeger , 1991
Buku Teks
[edited by] Elaine Lynne La Monica
Wadsworth Health Sciences Division, 1985
Buku Teks SO
edited by Edmund A. Bowles
Prentice-Hall, 1967
Buku Teks SO
Kimberly A.Schonert-Reichl, Robert W. Roeser, editor
Springer, 2016
Buku Teks