Cita APA (7th ed.)

U. S. Library of Congress. Descriptive Cataloging Division. (1947). Rules for descriptive cataloging in the library of Congress (Prelim. ed.). U.S. Govt. Print. Off.

Cita Chicago (17th ed.)

U. S. Library of Congress. Descriptive Cataloging Division. Rules for Descriptive Cataloging in the Library of Congress. Prelim. ed. Washington: U.S. Govt. Print. Off, 1947.

Cita MLA (9th ed.)

U. S. Library of Congress. Descriptive Cataloging Division. Rules for Descriptive Cataloging in the Library of Congress. Prelim. ed. U.S. Govt. Print. Off, 1947.