@prefix pr: <http://www.wikidata.org/prop/reference/> .
@prefix wdref: <http://www.wikidata.org/reference/> .

wdref:47d893e9c45d39bbdfd3b40f9e57e26b0a6931d2 pr:P304 "3" ;
    pr:P854 <https://books.google.cat/books?id=OzTzAgAAQBAJ&pg=PA3> .