Schrieke, Bertram Johannes Otto, author
Viking Press, 1936
Buku Teks
Banton Michael, author
Tavistock Publications, 1969
Buku Teks
Mason, Philip, author
Oxford University Press, 1970
Buku Teks
Kefala, Antigone, author
Makar, 1973
Buku Teks
edited by John A. Kromkowski
McGraw-Hill , 2002
Buku Teks