Source: https://www.cambridge.org/core/journals/behavioural-and-cognitive-psychotherapy/article/impact-of-parent-training-on-marital-functioning-a-comparison-of-two-group-versions-of-the-triple-ppositive-parenting-program-for-parents-of-children-with-earlyonset-conduct-problems/BE51C74EA7E84724A09287C3F3AC3709