Garson, G. David, author
Marcel Dekker, 2002
Buku Referensi
Thomas, R. Murray (Robert Murray), 1921-, author
Corwin Press, 2008
Buku Teks
Thomas, R. Murray (Robert Murray), 1921-, author
Bergin & Garvey, 2000
Buku Teks
Madsen, David, 1929-, author
Jossey-Bass, 1992
Buku Teks
Brause, Rita S., author
RoutledgeFalmer , 2000
Buku Teks