Não informado. (2018). Recent Literature: The American Ornithologists' Union. American Ornithologists' Union.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Recent Literature: The American Ornithologists' Union. Washington: American Ornithologists' Union, 2018.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Recent Literature: The American Ornithologists' Union. American Ornithologists' Union, 2018.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.