United States. Library of Congress & Library of Congress. Cataloging Policy and Support Office. (2007). Library of Congress classification. D-DR. History (general). History of Europe (2007 ed.). Library of Congress, Cataloging Distribution Service.
Chicago Style (17. basım) AtıfUnited States. Library of Congress ve Library of Congress. Cataloging Policy and Support Office. Library of Congress Classification. D-DR. History (general). History of Europe. 2007 ed. Washington, D.C: Library of Congress, Cataloging Distribution Service, 2007.
MLA (9th ed.) AtıfUnited States. Library of Congress ve Library of Congress. Cataloging Policy and Support Office. Library of Congress Classification. D-DR. History (general). History of Europe. 2007 ed. Library of Congress, Cataloging Distribution Service, 2007.