The Happiness Trap in eBook format for use on ebook readers. Purchase of this product gives you 2 formats to download (.epub, .mobi).
EBOOK READER DOWNLOADS & HELP
How to import .epub files into your iPhone and/or iPad iBooks App
Adobe Digital Editions (Apple or PC, reads .epub format, allows ebook to be printed)
Mobi Pocket Reader (reads .mobi files for Windows users)
Please note: It is NOT available in PDF format!
Also please note: For iPad and iPhone, you will need to download the epub file and move it into iTunes. The link below shows you how.