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see e.g.: Kate's Book
Madeleine, ISBN 978-0-593-06791-8, was written by Kate McCann and was published by Bantam Press on 12 May 2011.
Madeleine: A Heartbreaking and Extraordinary Disappearance, ISBN 978-0-85079-348-2, was published in December 2007 by Express Newspapers and written by Robert Downing.