KIRBY, Ronald E; BARRY, Thomas W; KERBES, Richard H; OBRECHT, Holliday H, III. Population dynamics of North American Light-bellied Brent Geese as determined by productivity and harvest surveys. Wildfowl, [S. l.], p. 49–52, 1985. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/155039. Acesso em: 16 dec. 2025.