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APA Citation
Melville, C. A., Johnson, P. C., Smiley, E., Simpson, N., Purves, D., McConnachie, A., & Cooper, S. (n.d.). problem behaviours and symptom dimensions of psychiatric disorders in adults with intellectual disabilities: An exploratory and confirmatory factor analysis. Research in developmental disabilities, 55, 1–13. http://access.bl.uk/ark:/81055/vdc_100040164731.0x00005e