Rick Torres: Is there microformats for Books? http://Schema.org perhaps? http://microformats.org/wiki/microformats2

@ricard_dev depends exactly what you want to mark up — if marking up a book in a product listing, try microformats.org/wiki/h-product. If actually marking up a book (e.g. HTML ebook) then you could use h-entry for each chapter or something. Hop in on freenode IRC if you need any more assistance :)

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