Não informado. (1899). Bird lore. National Association of Audubon Societies.
Chicagoスタイル(17版)引用形式Não informado. Bird Lore. New York: National Association of Audubon Societies, 1899.
MLA(8版)引用形式Não informado. Bird Lore. National Association of Audubon Societies, 1899.
警告: この引用は必ずしも正確ではありません.