EPUB: suitable for: iPad, iPhone, and iPod Touch, Kobo eReader, Sony Reader, Android devices, Barnes & Noble Nook,Acer Lumiread, BeBook, Cybook Gen3 Opus, COOL-ER, Cruz Reader, Ctaindia's eGriver Ebook Reader, eClicto, eSlick, Hanlin eReader, Hanvon N516, N518, N520, N526, iRex Digital Reader 800, 1000, iRiver Story, Pandigital Novel, Plastic Logic, PocketBook Reader.

MOBI: exclusively used by Amazon for the Amazon Kindle device