Edna B Foa, Coles, Meredith , Huppert, Jonathan D, Pasupuleti, Radhika V, Franklin, Martin E, and March, John . 2010. “Development And Validation Of A Child Version Of The Obsessive Compulsive Inventory”. Behavior Therapy, 41, Pp. 121–132. https://www.sciencedirect.com/science/article/abs/pii/S0005789409000586.