Não informado. (1937). Bulletin of the Colonial Institute of Amsterdam. Colonial Institute.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Bulletin of the Colonial Institute of Amsterdam. Amsterdam: Colonial Institute, 1937.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Bulletin of the Colonial Institute of Amsterdam. Colonial Institute, 1937.
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