After long discussions, me and Chiara Storti reviewed the "Pride and Prejudice" item and some of it's related items. We then wrote this *long* message here: https://www.wikidata.org/wiki/Wikidata_talk:WikiProject_Books#Wikiproject_Bo...
It's the first attempt to find a solution for Wikidata and books, especially regarding Wikisource. It's not complete but it's a start. I encourage you to take your time to read it.
As Sam Wilson is working on Ws-search, we could start populating some items with the right statements.
Aubrey
wikisource-l@lists.wikimedia.org