President

President (Game)
Encyclopedia entry describing the game in detail including rule variations.
http://www.wikipedia.org/wiki/President_(game)

Realbeer.com
A description of the game and how to play.
http://www.realbeer.com/fun/games/games-353.php

Rules of Card Games: President
Includes a history of the game and detailed rule set.
http://www.pagat.com/climbing/asshole.html