Erlinge, S. (1969). Food habits, home range and territoriality of the otter Lutra lutra L. Lund.
Lua i Stíl Chicago (17ú heag.)Erlinge, Sam. Food Habits, Home Range and Territoriality of the Otter Lutra Lutra L. Lund. 1969.
Lua MLA (8ú heag.)Erlinge, Sam. Food Habits, Home Range and Territoriality of the Otter Lutra Lutra L. Lund. 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.