I’m the author of a book “Production Haskell” - a distillation of my (at time of writing) seven years of experience writing Haskell in industry.
To get updates on the book, follow @prodhaskell on Twitter!
The e-book is available for purchase at the Production Haskell Leanpub site.
The book is also available as a hardcover, softcover, and Kindle from Amazon (note: referral link) .