9.
Cooper, G., Hoffman, K., Powell, B., & Marvin, R. (2005). The Circle of Security intervention: Differential diagnosis and differential treatment. In L. J. Berlin, Y. Ziv, L. M. Amaya-Jackson, & M. T. Greenberg (eds.), Enhancing early attachments: Theory, research, intervention, and policy (pp. 127–151). New York: Guilford Press.