Library of Congress. Subject Cataloging Division. (1982). Classification. Class P-PZ, language and literature tables. The Library For sale by the Cataloging Distribution Service, Library of Congress.
Chicago-referens (17:e uppl.)Library of Congress. Subject Cataloging Division. Classification. Class P-PZ, Language and Literature Tables. Washington: The Library For sale by the Cataloging Distribution Service, Library of Congress, 1982.
MLA-referens (9:e uppl.)Library of Congress. Subject Cataloging Division. Classification. Class P-PZ, Language and Literature Tables. The Library For sale by the Cataloging Distribution Service, Library of Congress, 1982.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.