THOMPSON, Dave; DUCK, Callan; LONERGAN, Mike E. The status of harbour seals (Phoca vitulina) in the United Kingdom. NAMMCO Scientific Publications, Tromsø, Norway, v. 8, p. 117–127, 2010. DOI: 10.7557/3.2679. Disponível em: https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2679. Acesso em: 9 may. 2026.