APA (7th ed.) Citation
PC, O., J, P., J, D., A, R., S, C., & P, T. (2002). Difficulties in conducting a randomized controlled trial of health service interventions in intellectual disability: Implications for evidence-based practice. Journal of Intellectual Disability Research, 46(4), 340-346.
Chicago Style (17th ed.) Citation
PC, Oliver, Piachaud J, Done J, Regan A, Cooray S, and Tyrer P. "Difficulties in Conducting a Randomized Controlled Trial of Health Service Interventions in Intellectual Disability: Implications for Evidence-based Practice." Journal of Intellectual Disability Research 46, no. 4 (2002): 340-346.
MLA (9th ed.) Citation
PC, Oliver, et al. "Difficulties in Conducting a Randomized Controlled Trial of Health Service Interventions in Intellectual Disability: Implications for Evidence-based Practice." Journal of Intellectual Disability Research, vol. 46, no. 4, 2002, pp. 340-346.
Warning: These citations may not always be 100% accurate.