South Africa. Sea Fisheries Branch. (1979). Investigational report. The Branch.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSouth Africa. Sea Fisheries Branch. Investigational Report. Cape Town: The Branch, 1979.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSouth Africa. Sea Fisheries Branch. Investigational Report. The Branch, 1979.
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