Dyfyniad APA

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.

Dyfyniad Arddull Chicago

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.

Dyfyniad MLA

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.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.