ZHANG, Yi. Johann Friedrich Herbart and His Mental State Theory: A Critical Review of Psychological Research. Prithvi Academic Journal, [S. l.], v. 8, p. 172–181, 2025. DOI: 10.3126/paj.v8i1.78903. Disponível em: https://nepjol.info/index.php/paj/article/view/78903. Acesso em: 7 dec. 2025.