I'm trying to cite a "P.S." section of a book, Green Grass Running Water by Thomas King, but the page numbers just start again from 1 at the start of the P.S. section (i.e. the next page after 430 is 1). How would I cite from that section? Would it be just (King 15)? That would conflict with the 15th page of the actual novel.
The content is actually taken from a journal as well, so should I cite that instead even though it's from the back of a book?