Roman Keycard Blackwood : THe Final Word
Eddie Kantar

This is the fifth (and according to the author, the very last - but don't hold your breath!) edition of what is acknowledged to be the definitive book on a convention that every serious player uses. Completely revised and updated from the previous version, this newest version contains even more leading-edge ideas, and is full of examples, quizzes and practice hands. A must for the tournament player.