Provedení MARC code list for countries (2012)

Library of Congress. Network Development and MARC Standards Office. MARC code list for countries [online]. 2003 edition, [Last updated April 4, 2008 to incorporate 12 additions]. Washington (D.C.): The Library of Congress, 2012-02-24 [cit. 2014-03-17]. Dostupné standardně ve formátu HTML z: http://www.loc.gov/marc/countries/. Verze ve formátu XML dostupná z: http://www.loc.gov/standards/codelists/countries.xml.