STEINBERG, M. &; SIEGFRIED, O. ADD: The 20 Hour Solution: Training Minds to Concentrate and Self- Regulate Naturally Without Medication. Education Review, [S. l.], 2015. DOI: 10.14507/er.v0.480. Disponível em: https://edrev.asu.edu/index.php/ER/article/view/480. Acesso em: 4 may. 2024.