I created a new book ( http://en.wikisource.org/wiki/User:Malafaya/Books/Alice_in_Wonderland ) and when I viewed the PDF result, every page has at the bottom its wikitext for interwiki links visible (except the brackets).
This definitely spoils the "professional" look of the book.
Version: unspecified
Severity: normal
URL: http://en.wikisource.org/wiki/User:Malafaya/Books/Alice_in_Wonderland