Não informado. (2018). Recent Literature: The American Ornithologists' Union. American Ornithologists' Union.
Chicago-referens (17:e uppl.)Não informado. Recent Literature: The American Ornithologists' Union. Washington: American Ornithologists' Union, 2018.
MLA-referens (8:e uppl.)Não informado. Recent Literature: The American Ornithologists' Union. American Ornithologists' Union, 2018.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.