Wright, B., Sims, D., Smart, S., Alwazeer, A., Alderson-Day, B., Allgar, V., …Miles, J. (2011). Melatonin versus placebo in children with autism spectrum conditions and severe sleep problems not amenable to behaviour management strategies: A Randomised Controlled Crossover Trial. Journal of Autism and Developmental Disorders, 41(2), 175-184. https://doi.org/10.1007/s10803-010-1036-5