Here is another book where Ruby was published, Character Development in Blender 2.5 . The book from the author Jonathan Williamson, the guy who makes the education management for CG Cookie and produce tutorials for Blender Cookie. I don't read the book yet, but probably is really good. I know that because I follow the site Blender Cookie and always has some fresh tutorials showing cool stuff.
Ruby is in the gallery of the book, with the work of other Blender artists like David Ward, Nirmal David and Roberto Roch.