Não informado. (2021). Annual Report of the National Oceanographic Council. National Oceanographic Council.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Annual Report of the National Oceanographic Council. Cambridge, Inglaterra: National Oceanographic Council, 2021.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Annual Report of the National Oceanographic Council. National Oceanographic Council, 2021.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.