Não informado. (1951). Archeological research series. U.S. Department of the Interior.
Chicago-referens (17:e uppl.)Não informado. Archeological Research Series. Washington: U.S. Department of the Interior, 1951.
MLA-referens (8:e uppl.)Não informado. Archeological Research Series. U.S. Department of the Interior, 1951.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.