São João, Ricardo, Sónia Galinha, and Cátia Fonseca. “Study of SDQ1 De Marsh: Verbal, Mathematical and Physical Appearance Self Concept in Adolescents”. Revista da UI_IPSantarém 7, no. 2 (January 22, 2020): 92–95. Accessed December 8, 2025. https://revistas.rcaap.pt/uiips/article/view/19292.