The best thing I ever found for sculpture, (far better for Poser IMO as it deals with solids, as opposed to pencil on paper) were a couple of books, one by Edouard Lantiri (Rodin's teacher/mentor) and one by Bruno Luchiesi, who run's the world's only remaining summer school for classical sculpture in Italy. One of them is called "modelling the figure in clay" both of them deal with composition, but the Lantiri book, (in two parts) has stuff about animals and drapery too. later jb