Williams, Betty Fry Effective programs for treating autism spectrum disorder : applied behavior analysis / Betty Fry Williams, Randy Lee Williams - 1st ed. - New York : Routledge, 2010. - 304 p. ISBN: 9780203855034 Subjects--Topical Terms: Autism spectrum disorders --TreatmentBehavioral assessment Dewey Class. No.: 616.858 82 WIL