I was surprised that for almost 300 pages there were only 26 references listed in the back. Not the end of the world by any means, clearly a ton of work went in

I was surprised that for almost 300 pages there were only 26 references listed in the back. Not the end of the world by any means, clearly a ton of work went into this, but I find it useful to see from references how it overlaps with other subjects I may know more about