- http://www.computer-books.us/
- http://www.phptr.com/promotions/promotion.asp?promo=1484&redir=1&rl=1
- http://www.freetechbooks.com/
- http://www.cerca-manuali.it/manuali.htm
- http://en.wikipedia.org/wiki/List_of_Linux_books
- http://www.linux.org/docs/online_books.html
- http://www.freeprogrammingresources.com/linuxbooks.html
- http://www.techbooksforfree.com/linux.shtml
- http://www.umbertosorbo.it/index.php?option=com_content&task=view&id=1&Itemid=12
- http://a2.pluto.it/
- http://erlug.linux.it/linuxdazero/ldz.html
- http://www.drweb.de/weblog/weblog/?p=571
- http://www.pescaralug.org/index.php?option=com_docman&task=doc_download&gid=20
- http://cdrom.gnutemberg.org/main.html


, li potete trovare qui:

