The exploratory and Confirmatory Factorial structure for Riso-Hadson enneagram test indicator. Journal Of Educational and Psychological Researches, [S. l.], v. 13, n. 50, p. 30–62, 2016. Disponível em: https://jperc.uobaghdad.edu.iq/index.php/jperc/article/view/341. Acesso em: 7 may. 2025.