Basic Blackjack, by Stanford Wong
Presents basic strategy and rule variations. Rules covered include: no hole card to dealer, doubling down, splitting, early surrender, five-card hands, over/under, multiple action, double exposure.

Beat the Dealer, by Edward O. Thorp
This book is a winning strategy for the game of 21. The essentials, consolidated in simple charts, can be understood and memorized by the average player.

Best Blackjack, by Frank Scoblete
In this book, Scoblete brings the best and most unique material of at least twice that many resources. He covers a mountain of territory! This is fun reading. This is how to win reading.