MITCHELL, Carl D; ROTELLA, Jay J. Brood amalgamation of Trumpeter Swans Cygnus cygnus buccinator. Wildfowl, [S. l.], p. 1–5, 2002. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/154119. Acesso em: 17 dec. 2025.