Alerstam, T. (1976). Bird migration in relation to wind and topography.
Lua i Stíl Chicago (17ú heag.)Alerstam, Thomas. Bird Migration in Relation to Wind and Topography. 1976.
Lua MLA (8ú heag.)Alerstam, Thomas. Bird Migration in Relation to Wind and Topography. 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.