Library of Congress posting online of ISO 639.2-1 and ISO 639-2. Codes for the Representation of Names of Languages. http://www.loc.gov/standards/iso639-2/php/code_list.php (8 May 2013).

Library of Congress posting online of ISO 639.2-1 and ISO 639-2. Codes for the Representation of Names of Languages. http://www.loc.gov/standards/iso639-2/php/code_list.php (8 May 2013).