Cross, D., Jonkel, C., Robertson, R., Smith, P., & Stirling, I. The ecology of the polar bear (Ursus maritimus) along the western coast of the Hudson Bay.
Lua i Stíl Chicago (17ú heag.)Cross, Dale, Charles Jonkel, Richard Robertson, Pauline Smith, agus Ian Stirling. The Ecology of the Polar Bear (Ursus Maritimus) Along the Western Coast of the Hudson Bay.
Lua MLA (9ú heag.)Cross, Dale, et al. The Ecology of the Polar Bear (Ursus Maritimus) Along the Western Coast of the Hudson Bay.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.