Library of Congress. Subject Cataloging Division, Gale Research Company, & Library of Congress. Classification Division. (1963). Classification. Class P, subclasses PB-PH: Modern European languages (with supplementary pages). [Library of Congress, Subject Cataloging Division].
Cita Chicago (17th ed.)Library of Congress. Subject Cataloging Division, Gale Research Company, i Library of Congress. Classification Division. Classification. Class P, Subclasses PB-PH: Modern European Languages (with Supplementary Pages). Washington: [Library of Congress, Subject Cataloging Division], 1963.
Cita MLA (9th ed.)Library of Congress. Subject Cataloging Division, et al. Classification. Class P, Subclasses PB-PH: Modern European Languages (with Supplementary Pages). [Library of Congress, Subject Cataloging Division], 1963.