Add book to series

[Deian]

I think that Tiffany Aching's Guide to Being A Witch needs to be added to the 'Discworld Companion Books' series, because, 'Like other Discworld tie-ins including Nanny Ogg's Cookbook, it is presented as though published in the fictional city of Ankh-Morpork. It makes reference to many characters and events from throughout the Discworld novels, though primarily from the Witches and Tiffany sub-series.', according to publisher's websites of the book, like the Bulgarian one: https://artline-store.net/nar-chnik-z.... So, like the other books in this series, it's written in-universe and references characters from other books.

Book: https://www.goodreads.com/book/show/1...

Series to be added to: https://www.goodreads.com/series/9938...

As the rule says, the books in a series must have characters in common, an overarching storyline and a shared universe (which this book and the others of the series have).

Thanks in advance!