WOOD, Stephanie A; BRAULT, Solange; GILBERT, James R. 2002 Aerial Surveys of Grey Seals in the Northeastern United States. NAMMCO Scientific Publications, Tromsø, Norway, v. 6, p. 117–121, 2007. DOI: 10.7557/3.2727. Disponível em: https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2727. Acesso em: 18 apr. 2026.