Não informado. (2021). LC Classification, Additions and Changes. Library of Congress.
Chicagoスタイル(17版)引用形式Não informado. LC Classification, Additions and Changes. Washington: Library of Congress, 2021.
MLA(8版)引用形式Não informado. LC Classification, Additions and Changes. Library of Congress, 2021.
警告: この引用は必ずしも正確ではありません.