Display all publication references included in Wikipathway endpoint

Statement: 
Display all publication references included in Wikipathway endpoint
A limit of results per page $number$ (e.g.100)
Query: 
prefix wp: <http://vocabularies.wikipathways.org/wp#> prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> prefix dcterms: <http://purl.org/dc/terms/> prefix dc: <http://purl.org/dc/elements/1.1/> SELECT DISTINCT ?publication WHERE { ?publication ?P <http://vocabularies.wikipathways.org/wp#PublicationReference> . } Limit ??number