↑Directorate of Intelligence (2011-07-12). "CIA – World Factbook". คลังข้อมูลเก่าเก็บจากแหล่งเดิมเมื่อ 2008-08-12. สืบค้นเมื่อ 2011-07-14. The World Factbook provides information on the history, people, government, economy, geography, communications, transportation, military, and transnational issues for 267 world entities.
↑Directorate of Intelligence. "The World Factbook – Contributors and Copyright Information". คลังข้อมูลเก่าเก็บจากแหล่งเดิมเมื่อ 2013-05-13. สืบค้นเมื่อ 2006-09-23. 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).
↑"CIA World Factbook 2006 Now Available" (Press release). Central Intelligence Agency. 2006-04-05. คลังข้อมูลเก่าเก็บจากแหล่งเดิมเมื่อ 2007-06-13. สืบค้นเมื่อ 2007-01-11. The World Factbook remains the CIA's most widely disseminated and most popular product, now averaging almost 6 million visits each month. In addition, tens of thousands of government, commercial, academic, and other Web sites link to or replicate the online version of the Factbook. * * * Included among the 271 geographic entries is one for the "World," which incorporates data and other information summarized where possible from the other 270 country listings.
On stephansmap.org – The CIA World Factbook accessible by location and date range; covers the years 2001–2007. All Factbook entries are tagged with "cia". Requires graphical browser with javascript.
