Arnbom, T. (1994). Maternal investment in male and female offspring in the southern elephant seal. Dept. of Zoology, Stockholm University.
Lua i Stíl Chicago (17ú heag.)Arnbom, Tom. Maternal Investment in Male and Female Offspring in the Southern Elephant Seal. Stockholm, Sweden: Dept. of Zoology, Stockholm University, 1994.
Lua MLA (8ú heag.)Arnbom, Tom. Maternal Investment in Male and Female Offspring in the Southern Elephant Seal. Dept. of Zoology, Stockholm University, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.