Não informado. (2021). LC Classification, Additions and Changes. Library of Congress.
Style de citation Chicago (17e éd.)Não informado. LC Classification, Additions and Changes. Washington: Library of Congress, 2021.
Style de citation MLA (8e éd.)Não informado. LC Classification, Additions and Changes. Library of Congress, 2021.
Attention : ces citations peuvent ne pas être correctes à 100%.