Nobody Likes Me, Everybody Hates Me: The top 25 friendship problems and how to solve them
By: Michele Borba
Description: "Based on a survey of five thousand teachers and parents, Nobody Likes Me shows how to teach your child the 25 most essential friendship-building skills kids need to find, make, and keep friends, as well as survive that social pressure from peers." While not specifically for students on the autism spectrum, this is a great starting place. It includes information on organizing playgroups.