"Market Wizards" and "New market Wizards" by Schwager
"Pitbull" by Marty Schwartz
"Option volatility and pricing" By Sheldon Natenberg
"Futures spread trading: the Complete guide" By Courtney Smith
"New trading systems and methods" By Perry Kaufman.
I would say there are few good books that changed my trading methods and patterns.
1. Trading for a Living - by Alexander Elder : This book gave more insights in to mass psychology and a guided my Money management skills, methods and mind(They way my mind deals with market movements).
2. Profitable Candlestick patterns - by Stephen Biglow : By reading this book, I learnt the art of Candlestick reading.
There are quite some good books that I am yet to read and I am ordering them one by one to read.