Calibre - User Manual, PDF, Metadata
Calibre review and where to download
Calibre eBook Management User Interface Tutorial
File:Calibre-ebook reader.png - Wikimedia Commons
How to Install Calibre on Your Synology NAS – Marius Hosting
Convert PDF Files To EPUB Format In Linux - OSTechNix
calibre - New in calibre 2.0
Calibre Version 4.0 Released With New eBook Viewer
A User's Guide To Calibre eBook Manager
Calibre: How I put epub books on my Kindle – Six Colors