Cita APA

Estados Unidos. Library of Congress. (1974). Information on the Marc system. [S.l.]: Library of Congress.

Citación estilo Chicago

Estados Unidos. Library of Congress. Information On the Marc System. [S.l.]: Library of Congress, 1974.

Cita MLA

Estados Unidos. Library of Congress. Information On the Marc System. [S.l.]: Library of Congress, 1974.