Não informado. (1949). American Heritage. American Association for State and Local History.
Chicagoスタイル(17版)引用形式Não informado. American Heritage. Cooperstown, NY: American Association for State and Local History, 1949.
MLA(8版)引用形式Não informado. American Heritage. American Association for State and Local History, 1949.
警告: この引用は必ずしも正確ではありません.