WARING, Gordon T; GILBERT, James R; BELDEN, Dana; VAN ATTEN, Amy; DIGIOVANNI JR, Robert A. A review of the status of harbour seals (Phoca vitulina) in the Northeast United States of America. NAMMCO Scientific Publications, Tromsø, Norway, v. 8, p. 191–212, 2010. DOI: 10.7557/3.2685. Disponível em: https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2685. Acesso em: 22 apr. 2026.