Bonta, J. L., & Watters, R. G. (1983). Use of manual signs by developmentally disordered speech deficient children in delayed auditory-to-picture matching-to-sample. <i>Analysis and Intervention in Developmental Disabilities</i>, <i>3</i>, 295-309.
Carp, C. L., Peterson, S. P., Arkel, A. J., Petursdottir, A. I., & Inqvarsson, E. T. (2012). A further evaluation of picture prompts during auditory-visual conditional discrimination training. <i>Journal of Applied Behavior Analysis</i>, <i>45</i>, 737-751.
Charlop, M. H. (1983). The effects of echolalia on acquisition and generalization of receptive labeling in autistic children. Journal of Applied Behavior Analysis, 16, 111-126.
Clark, K. M., & Green, G. (2004). Comparison of two procedures for teaching dictated-word/symbol relations to learners with autism. <i>Journal of Applied Behavior Analysis</i>, <i>37</i>, 503-507.
Eikeseth, S., & Hayward, D. W. (2009). The discrimination of object names and object sounds in children with autism: A procedure for teaching verbal comprehension. <i>Journal of Applied Behavior Analysis</i>, <i>42</i>, 807-812.