Book purchase includes a PDF version and an eReader version for download to a device such as an iPad, Nook, or Kindle.
More information on eReader version...


More information on eReader versions
eReader versions on NursingCenter are in EPUB format and can be opened in most eBook readers, like the B&N Nook and Kobo eReader. EPUB files may have to be converted before they're usable on the Amazon Kindle.

There are many free programs that can be used that allow you to open EPUB files including Calibre, Adobe Digital Editions, Stanza Desktop, Mobipocket Reader Desktop, Okular, and Sumatra PDF.   There is also a Firefox Add-on, EPUBReader, that allows you to read EPUB files in your Internet browser. Plenty of iPhone and Android apps also exist that allow viewing of EPUB files.