Originally Posted by Patuba
I know the book layout was done with Quark. I'm not sure what program he wrote the text in. He is on a Mac so I don't know if he used Word or something else.
If you can get access to the Quark file(s) and a copy of Quark 9 (maybe the 30 trial would work), it has an export to ePub function. Not sure how good the resultant ePub is, but it has to be better than something exported from a PDF. Once a good ePub is made (using Sigil to edit if necessary, or hand editing) using KindleGen/Kindle Previewer should get you a nice mobi file for use on the Kindle.