(1998). Library of Congress subject headings. Washington, D.C: Library of Congress, Cataloging Distribution Service.
استشهاد بنمط شيكاغوLibrary of Congress Subject Headings. Washington, D.C: Library of Congress, Cataloging Distribution Service, 1998.
MLA استشهادLibrary of Congress Subject Headings. Washington, D.C: Library of Congress, Cataloging Distribution Service, 1998.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.