Hartman, G. (1994). Ecological studies of a reintroduced beaver (Castor fiber) population. Swedish University of Agricultural Sciences, Dept. of Wildlife Ecology.
Lua i Stíl Chicago (17ú heag.)Hartman, Göran. Ecological Studies of a Reintroduced Beaver (Castor Fiber) Population. Uppsala, Sweden: Swedish University of Agricultural Sciences, Dept. of Wildlife Ecology, 1994.
Lua MLA (8ú heag.)Hartman, Göran. Ecological Studies of a Reintroduced Beaver (Castor Fiber) Population. Swedish University of Agricultural Sciences, Dept. of Wildlife Ecology, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.