Não informado. (1956). Ports and Harbors. International Association of Ports and Harbors.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Ports and Harbors. Tokyo: International Association of Ports and Harbors, 1956.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Ports and Harbors. International Association of Ports and Harbors, 1956.
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