Longres, John F.
F.E. Peacock Publisher, Inc, 1990
Buku Teks
Anderson, Ralph E.
Aldine, 1974
Buku Teks SO
Ashford, Jose B.
Thomson Brooks, 2006
Buku Teks
Zastrow, Charles
Nelson-Hall, 1993
Buku Teks SO
edited by Gary T. Moore, Robert W. Marants
Plenum Press, 1997
Buku Teks SO