Não informado. (1954). West Coast South America series. American University Field Staff.
Chicago-referens (17:e uppl.)Não informado. West Coast South America Series. New York: American University Field Staff, 1954.
MLA-referens (8:e uppl.)Não informado. West Coast South America Series. American University Field Staff, 1954.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.