Fenner's book is great. An oldie but goodie is Martin Moe's "Saltwater Aquariums beginner to breeder" that is still a solid starter book.

I have the 4 volume set of the 'Modern Coral Reef Aquarium' and though it goes all over the place it is a really cool set of books though the presentation makes it hard to find what you need.

John Tullock wrote a book called 'Natural Reef Aquariums' that is also pretty good.