GILLMOR, Robert A F; BLURTON JONES, N G. Rounding up Canada Geese - 2. Englefield Park, Berkshire. Wildfowl, [S. l.], p. 83, 1953. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/155452. Acesso em: 18 dec. 2025.