„Manatees”. Canisius Ambassadors for Conservation. Institute for the Study of Human-Animal Relations. Архивирано из оригинала 22. 10. 2019. г. Приступљено 21. 10. 2014.
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„Manatees”. Canisius Ambassadors for Conservation. Institute for the Study of Human-Animal Relations. Архивирано из оригинала 22. 10. 2019. г. Приступљено 21. 10. 2014.
