Why are there 3 versions of "Zero to One" (same book) with different pricing on Google Play Book? and none of them are from the official publisher Crown Business.<p>Are these books legitimate (not pirated copy)?
https://play.google.com/store/books/details/Blake_Masters_Zero_to_One?id=M22fAwAAQBAJ&hl=en
https://play.google.com/store/books/details/Peter_Thiel_Zero_to_one?id=LZEwBwAAQBAJ
https://play.google.com/store/books/details/Peter_Thiel_Zero_to_One?id=yG2KBwAAQBAJ