edited by Michael Banton
Tavistock Publications, 1973
Buku Teks
Midgley, James, author
Sage, 2014
Buku Teks
Tucker, W.T., author
Holt, Renehart and Winston, 1964
Buku Teks
Schraf, Betty R
Tiara Wacana Yogya, 1995
Buku Teks
Demerath, N. J. (Nicholas Jay), 1936-, author
Random House, 1969
Buku Teks