GameZone - News, screenshots, and links. - http://wii.gamezone.com/gamesell/p32501.htm
GameSpy - Provides information, screenshots, and previews. - http://wii.gamespy.com/wii/ghost-squad/
GameSpot - Preview, by Joe Dodson: "...nothing makes freedom ring like a good old headshot, which we tried to put on a bad guy who was kidnapping that holy grail of evil ambition, the President." - http://www.gamespot.com/wii/action/ghostsquad/news.html?sid=6177420&mode=recent
IGN - Screenshots, previews, news, and a message board. - http://wii.ign.com/objects/903/903769.html
Wikipedia - Article describing the background, characters, and data cards. - http://en.wikipedia.org/wiki/Ghost_Squad