Não informado. (2018). Report of the Secretary of the Smithsonian Institution. Smithsonian Institution.
Chicagoスタイル(17版)引用形式Não informado. Report of the Secretary of the Smithsonian Institution. Washington: Smithsonian Institution, 2018.
MLA(8版)引用形式Não informado. Report of the Secretary of the Smithsonian Institution. Smithsonian Institution, 2018.
警告: この引用は必ずしも正確ではありません.