http://en.wikipedia.org/wiki/Nine_ball

http://www.bca-pool.com/play/tournaments/rules/rls_9bl.shtml

http://games.yahoo.com/games/rules/pool/rules1.html?page=pl

http://zone.msn.com/en/bankshot9ball/default.htm

http://www.miniclip.com/games/9-ball-pool/en/

http://www.borderbilliards.com/basic-nine-ball-rules.html

http://www.candystand.com/play/9-ball-billiards-mp

http://www.bca-pool.com/play/tournaments/rules/pdf/BCA9BallRules.pdf

http://www.tribilliards.com/9ballrules.html

http://www.miniclip.com/games/9-ball-quick-fire-pool/en/