Martinsen, Kristin D., and Erling W Rognli. “Systematic Review and Classification Of: The Bergen 4-Day Treatment (B4DT) (1. Ed.)”. Ungsinn. Journal of Effective Interventions for Children and Adolescents 13, no. 1 (May 11, 2021). Accessed August 16, 2026. https://septentrio.uit.no/index.php/ungsinn/article/view/7343.