Most programs use Kaplan and Sadock or the APA textbook of psychiatry. K&S comes in three versions. The pocket book is not enough, the synopsis is about 700 pages, or there is the monster 2 volume set. The APA is about 800 pages. The APA book is more multi-authored and has a little more redundancy. Both have good chapters on pharm, but you should supplement these with a pharm text. Everyone should read a text to start before diving into the more esoteric journal literature.