2008 Beijing Games: Official site of the Chinese Summer Olympics. Contains fact sheets, athlete and venue profiles, cultural information and news

International Olympic Committee - Beijing 2008: News, facts, athletes, and sports

International Olympic Committee: London 2012 Summer Olympics: Official site features news, schedules, venues, results, torch relay, information on each sport, athlete profiles, tickets, spectator information, and photographs

International Olympic Committee: Rio 2016 News: Includes headline news, feature stories, press releases, and photograph

International Olympic Committee: Rio 2016 Summer Olympics: Features videos, photos, dates, athletes, schedule, and news

Wikipedia: 2012 Summer Olympics: Encyclopedia article with information about the games

Wikipedia: 2012 Summer Olympics Participants: Describes each team competing in the games