Não informado. (1957). British Bulletin of Publications on Latin America, the Caribbean, Portugal and Spain. Hispanic and Luso-Brazilian Councils.
Chicago-referens (17:e uppl.)Não informado. British Bulletin of Publications on Latin America, the Caribbean, Portugal and Spain. London: Hispanic and Luso-Brazilian Councils, 1957.
MLA-referens (8:e uppl.)Não informado. British Bulletin of Publications on Latin America, the Caribbean, Portugal and Spain. Hispanic and Luso-Brazilian Councils, 1957.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.