|Free preview:||The main text of the book for free online viewing, with an exchange forum to post questions etc.|
Free app for iPads, iPhones etc that can display all
language editions as high-quality PDF.
Individual chapters $0.99.
Price for the whole book varies by language. Free upgrades to future editions included, past editions are free too.
|iBook:||For use with iPads, iPhones etc. with Apple's iBook app. English only.|
High-quality eBook that you can download to your
computer, tablet or phone. To read it, you need the Bluefire
Reader app on your device, or Adobe's Digital Editions eBook reader on your computer. (Both are free.) Printable, but no annotations.
Translations as Adobe eBooks: 中文, 日本語, русский, deutsch
|Professional:||Fully featured, freely installable PDF for computers and tablets. Includes free upgrades to future editions.|
|Course Notes:||Same as the professional edition, but with a licence to print and distribute class notes.|
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