Directorate of Intelligence, The World Factbook – Contributors and Copyright Information, su cia.gov. URL consultato il 23 settembre 2006 (archiviato dall'url originale il 13 maggio 2013).
«The World Factbook is prepared by the Central Intelligence Agency for the use of US Government officials, and the style, format, coverage, and content are designed to meet their specific requirements. Information is provided by other public and private sources. The Factbook is in the public domain. Accordingly, it may be copied freely without permission of the Central Intelligence Agency (CIA).»
