BISHOP, Mary A; YANLING, Song; ZHOUMA, Canjue; BINYUAN, Gu. Bar-headed Geese Anser indicus wintering in South-central Tibet. Wildfowl, [S. l.], p. 118–126, 1997. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/154097. Acesso em: 17 dec. 2025.