Boas, Franz, 1858-1942, author
Dover Publication, 1955
Buku Teks
Adam, Leonhard
Penguin Books, 1949
Buku Teks
Anderson, Richard, author
Prentice-Hall, 1979
Buku Teks
Case, Caroline, author
Routledge, 2005
Buku Teks
Diamond, A. S. (Arthur Sigismund), author
Johnson`s, 1950
Buku Teks