You really don't need to limit yourself! Read as much as you can, get a variety of opinions, and see what makes sense to you. But as far as raising a puppy you really can't go wrong with Ian Dunbar. He founded the Association of Pet Dog Trainers, as well as Sirius Puppy Training, early off leash classes using positive reinforcement, back in the 80's when it was unheard of to train puppies that young. His credentials are impeccable, as a trainer, veterinarian and animal behaviorist. I took Sirius Puppy classes with my two dogs, and Dunbar's book After You Get Your Puppy was used as the textbook for the class. I highly recommend that book in particular.
Additionally, some good trainer/authors are Jean Donaldson, Sheila Booth, Jan Fennel, Pat Miller, Patricia McConnell, and Suzanne Clothier.