APA (7th ed.) Citation

(1991). Genealogies: Cataloged by the Library of Congress since 1986. Library of Congress.

Chicago Style (17th ed.) Citation

Genealogies: Cataloged by the Library of Congress Since 1986. Washington: Library of Congress, 1991.

MLA (9th ed.) Citation

Genealogies: Cataloged by the Library of Congress Since 1986. Library of Congress, 1991.

Warning: These citations may not always be 100% accurate.