Arranz, E. B., Olabarrieta, F., Manzano, A., Martín, J. L., Cruz, N., & Etxaniz, A. (2016). Assessment of positive parenting programmes in the Autonomous Region of the Basque Country (Spain). Psychosocial Intervention, 25(2), 127–134. https://doi.org/10.1016/j.psi.2016.03.003