I'll add Bobby Owsinski's "The Mixing Engineer's Handbook". It's a classic book that's been around for a long time and a lot of people swear by it. I haven't read the latest editions, but the older editions are written in a pretty universal manner (i.e., not aimed at one particular genre and definitely not EDM-specific), but covers a lot of range, includes perspectives from a bunch of big names in the industry, etc.