Não informado. (1949). British Bulletin of Publications on Latin America, The West Indies, Portugal and Spain. Hispanic and Luso-Brazilian Councils.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. British Bulletin of Publications on Latin America, The West Indies, Portugal and Spain. London: Hispanic and Luso-Brazilian Councils, 1949.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. British Bulletin of Publications on Latin America, The West Indies, Portugal and Spain. Hispanic and Luso-Brazilian Councils, 1949.
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