Non-Trek: The Iron Codex (Dark Arts #2) by David Mack

[Christopher]

One can write a review on Amazon without having bought it on Amazon.

Yes, absolutely. No matter where you bought it, posting reviews on Amazon will help boost awareness and sales. As long as you've actually read the thing, then you can post reviews anywhere that they'll be read -- Amazon, Goodreads, whatever else is out there.

 

[David Mack]

^ Though sometimes Amazon makes it difficult for people who don't regularly buy products from them to post reviews --- especially of books. But yes, if anyone who has read The Iron Codex would be willing to post a review on Amazon, I'd be most grateful.