edited by Greg Gatenby
J.J. Douglas, 1977
Buku Teks
edited by Sam H. Ridgway and Richard J. Harrison
Academic Press, 1989
Buku Referensi
edited by A.S. Cairncross
Macmillan, 1937
Buku Teks
Kroeber, Karl, author
Harper and Row, 1965
Buku Teks
Warner, Alan
Oxford University Press, 1957
Buku Teks