Παραπομπή APA

Library of Congress. (2009). Understanding MARC bibliographic. Washington, DC: Library of Congress.

Παραπομπή Chicago Style

Library of Congress. Understanding MARC Bibliographic. Washington, DC: Library of Congress, 2009.

Παραπομπή MLA

Library of Congress. Understanding MARC Bibliographic. Washington, DC: Library of Congress, 2009.

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