Não informado. (1930). Bird Banding. North-Eastern Bird-Banding Association.
Chicago-referens (17:e uppl.)Não informado. Bird Banding. Boston, Mass: North-Eastern Bird-Banding Association, 1930.
MLA-referens (8:e uppl.)Não informado. Bird Banding. North-Eastern Bird-Banding Association, 1930.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.