VAN DER ARK, L. A. . Mokken Scale Analysis in R. Journal of Statistical Software, [S. l.], v. 20, n. 11, p. 1–19, 2007. DOI: 10.18637/jss.v020.i11. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v020i11. Acesso em: 10 aug. 2022.