Library of Congress & Subjet Cataloging Division. (1999). Library of Congress Subject Headings (22nd ed.). The National Bibliographic Service.
Citação norma ChicagoLibrary of Congress and Subjet Cataloging Division. Library of Congress Subject Headings. 22nd ed. Washington: The National Bibliographic Service, 1999.
Citação norma MLALibrary of Congress and Subjet Cataloging Division. Library of Congress Subject Headings. 22nd ed. The National Bibliographic Service, 1999.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.