Waring, Gordon T, James R Gilbert, Dana Belden, Amy Van Atten, and Robert A DiGiovanni Jr. “A review of the status of harbour seals (<i>Phoca vitulina</i>) in the Northeast United States of America”. NAMMCO Scientific Publications 8 (September 1, 2010): 191–212. Accessed January 8, 2025. https://new.eludamos.org/index.php/NAMMCOSP/article/view/2685.