McHugh, L., Broomfield, L., & Reed, P. (2008). The effect of observing response procedures on the reduction of over-selectivity in a match to sample task: Immediate but not long term benefits. Research in Developmental Disabilities, 29(3), p. 217. doi:10.1016/j.ridd.2007.04.001

McHugh, Louise, Laura Broomfield, and Phil Reed. "The Effect of Observing Response Procedures On the Reduction of Over-selectivity in a Match to Sample Task: Immediate but Not Long Term Benefits." Research in Developmental Disabilities 29, no. 3 (2008): 217.

McHugh, Louise, Laura Broomfield, and Phil Reed. "The Effect of Observing Response Procedures On the Reduction of Over-selectivity in a Match to Sample Task: Immediate but Not Long Term Benefits." Research in Developmental Disabilities 29.3 (2008): 217.