Paperback and hardback books are available online from retailers, including:
|Quail Ridge Books (USA)||quailridgebooks.com|
|Fishpond (New Zealand)||fishpond.co.nz/Books|
|Exclusive Books (South Africa)||exclusivebooks.co.za|
e-books direct to readers are now available.
Worldwide sales via VitalSource.com.
Some American readers may choose to use RedShelf.com.
All e-books should be considerably cheaper than the paperback editions.
University library e-books via EBSCO.