VAN DER ARK, L. A. . New Developments in Mokken Scale Analysis in R. Journal of Statistical Software, [S. l.], v. 48, n. 5, p. 1–27, 2012. DOI: 10.18637/jss.v048.i05. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v048i05. Acesso em: 5 dec. 2021.