How to make Kindle books turn right to left, instead of left to right?

I have a Kindle Paperwhite, and I convert and put lots of manga, that I have scanned, into it using Calibre (http://calibre-ebook.com/). It works great, but the pages turn left to right, which feels unnatural because manga books is read right to left. On the mangas I have bought on Amazon, the books turn right to left and everything works as it should do. Anybody know how I can use Calibre, or any other tool, to fix this?


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