Não informado. (2004). Expedition to South-West Arabia, 1937-1938. Trustees of the British Museum.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Expedition to South-West Arabia, 1937-1938. London: Trustees of the British Museum, 2004.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Expedition to South-West Arabia, 1937-1938. Trustees of the British Museum, 2004.
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