Europe's Sea Mammals Including the Azores, Madeira, the Canary Islands and Cape Verde. Princeton University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रEurope's Sea Mammals Including the Azores, Madeira, the Canary Islands and Cape Verde. Princeton University Press.
एमएलए (9वां संस्करण) प्रशस्ति पत्रEurope's Sea Mammals Including the Azores, Madeira, the Canary Islands and Cape Verde. Princeton University Press.
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