Wikidata property values are effectively retrieved by #property inclusion syntax, but it work only when used into the wikisource page directly linked to a wikidata element. 

An effective management of a  "book" (best, a literary work) needs creation of two different elements ("work" and "edition"); ns0 wikisource pages can be linked to "edition" wikidata element just as Author: pages are linked to author's wikidata element; on the contrary, presently there's no wikisource page that could be  linked to "work" wikidata element, so the data of the latter can't be retrieved into wikisource by #property inclusion syntax.

I'm testing a strange idea: to create wikisource "work" pages as subpages of author's page. It seems a nonsense location, but it has a long series of advantages and few disadvantages IMHO:

* omonimies decrease sharply;

* there's a logical and implicit link between author and his works;

* work pages can be very simply self-categorized as [[Category:Works by {{BASEPAGENAME}}]]

* joining {{#property:...}} and {{subst:#property:...}} codes, such work pages both show data and run as templates to access the data from any other page.

* the code can be completely standardized and can be easily created/updated by bot, simply posting the same base code into any work page, new or old. 

Tests are going on working using https://it.wikisource.org/wiki/Autore:Silvio_Pellico and its related wikidata elements. 

Alex brollo

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