Stafford books on iTunes

Wasn't sure which section to post this but can anyone recommend a good book about staffords in iTunes so I can read on my iPad? There are a number of them there but I'm not sure which one is the most comprehensive
Any recommendations would be appreciated.

Sorry Diane, I don't get much time to read any more. I'm sure someone will be along with some good suggestions though.

The ones I'm looking at are the following.

1. Staffordshire Bull Terrier by Jane Hogg From https://itunes.apple.com/gb/book/staffordshire-bull-terrier/id491667819?mt=11
2. Your Staffordshire Bull Terrier by Tracy Libby https://itunes.apple.com/au/book/your-staffordshire-bull-terrier/id469416542?mt=11
3. Staffordshire Bull Terrier: An Owner's Guide by Tracey Smith https://itunes.apple.com/us/book/staffordshire-bull-terrier/id725653369?mt=11
4. The Complete Guide to Staffordshire Bull Terriers by Kevin Winslet https://itunes.apple.com/au/book/complete-guide-to-staffordshire/id576221289?mt=11
5. The Staffordshire Bull Terrier by Cynthia P. Gallagher https://itunes.apple.com/us/book/staffordshire-bull-terrier/id474532089?mt=11

I haven't read any of those, so I can't comment. Does it have to be an itunes book? Wouldn't you rather just get a good book? 

It can be any book really but it's easier to buy on iTunes as it downloads directly onto my iPad so I can read it on there like I do all my books now
Have no problem ordering a hard copy though.

Two books well worth reading....

http://www.abebooks.com/servlet/SearchResults?an=stone%2C+steve&kn=staffordshire+bull+terrier&sts=t

http://www.amazon.com/gp/offer-listing/1906305005/ref=tmm_other_meta_binding_used_olp_sr?ie=UTF8&condition=used&sr=1-5&qid=1385671602