Assessing the efficacy and effectiveness of a Positive Psychologybased self-help book. Terapia Psicológica, [S. l.], v. 31, n. 1, p. 141–149, 2016. Disponível em: https://www.teps.cl/index.php/teps/article/view/93. Acesso em: 12 nov. 2026.