Burns, Thomas J.
McGraw-Hill, 1986
Buku Teks
Wilder, Laura Ingalls, author
Harper Trophy, 2004
Buku Teks
Williams, Bill
John Wiley & Sons, 1978
Buku Teks
Boore, William F., author
McGraw-Hill, 1968
Buku Teks
Barnouw, Victor
[T.t] : American Anthropological Association, 1950.
Buku Teks