A Comparison of Transfer of Stimulus Control Or Multiple Control on the Acquisition of Verbal Operants in Young Children with Autism: an Extension, thesis, August 2012; (https://digital.library.unt.edu/ark:/67531/metadc149648/m1/1/: accessed April 23, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .