Oliveira, Luís, Maria Medeiros, and Ana Serrano. “ADHD: After All, What Is Its Origin?”. Revista Portuguesa de Pedagogia0, no. 51-1 (October 31, 2017): 43-61. Accessed August 20, 2025. https://impactum-journals.uc.pt/rppedagogia/article/view/1647-8614_51-1_3.