Kitano, Harry H.L.
Prentice-Hall, 1974
Buku Teks
McLemore, S Dale
Allyn and Bacon, 1983
Buku Teks
Epps, Edgar G.
Winthrop Publisher,INC, 1973
Buku Teks
Banton Michael, author
Tavistock Publications, 1969
Buku Teks
Mason, Philip, author
Oxford University Press, 1970
Buku Teks