- http://www.austlii.edu.au/au/legis/cth/consol_act/aia1901230/s22.html Archived 2008-12-05 at the Wayback Machine, http://www.austlii.edu.au/cgi-bin/disp.pl/au/cases/cth/federal%5fct/1997/912.html, http://foia.state.gov/masterdocs/09fam/0941104X1.pdf Archived 2008-04-14 at the Wayback Machine http://www.economist.com/theworldin/international/displayStory.cfm?story_id=3372495&d=2005 http://www.state.gov/documents/organization/84411.pdf
- About.com:"Geography: Country, State, and Nation".
- List of countries List of countries in various formats (CSV, TXT, HTML) for use in databases and applications
- List of nationalities List of nationalities in various formats (CSV, TXT, HTML) for use in databases and applications
- How many countries are there?
- BBC Country Profiles
- Countries in 1900