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Silman's Complete Endgame Course by Jeremy Silman.
http://www.theweekinchess.com/john-watson-reviews/theres-an-end-to-it-all
https://web.archive.org/web/20140708103149/http://www.chesscafe.com/text/review594.pdf
I have a played a few tournament. Not a complete beginner. Just suggest me some books on endgame. I have other for middle game and opening (International Chess School)