What is the ISBN of Little Brother Cory Doctorow novel?

The ISBN of Cory Doctorow's *Little Brother* depends on the edition you're looking for. Here are some common ones:

* Paperback (first edition, 2008): 978-0-446-19921-9

* Hardcover (first edition, 2008): 978-0-446-19920-2

* Kindle Edition: B0029H017Y

To find the ISBN for a specific edition, you can search online bookstores like Amazon or Goodreads.