Banton Michael
Tavistock Publications, 1969
Buku Teks
Mason, Philip
Oxford University Press, 1970
Buku Teks
Kefala, Antigone
Makar, 1973
Buku Teks
edited by John A. Kromkowski
McGraw-Hill , 2002
Buku Teks
edited and with an introduction by Andrew W. Lind
University of Hawaii Press, 1955
Buku Teks