In ebook €1,99 DRM free, formati disponibili:
EPUB , MOBI (Compatibile Kindle)
Ebook Store on line:
Apple Ibook Store (App IBOOK IOS)
Ebook Hoepli (EPUB , MOBI, PDF)
Youcanprint (EPUB , MOBI, PDF)
BookRepublic (Epub)
LaFeltrinelli (EPUB)
IBS (EPUB , MOBI)
MondadoriStore (Epub)
kobobooks (Epub)
Amazon Kindle Store (Formato Kindle)
Libreria Universitaria (EPUB , MOBI, PDF)