Reid, Mary E. <br/><br/>World Book's Animals of the World  Howlers and Other New World Monkeys  -- Chicago:  World Book, Inc.,  2000. <br/><br/> Includes index <br/><br/><label>ISBN: </label>0716612097 <br/><br/><label>Dewey Class. No.: </label>GS Gen. Ref 599.85 R44 2000