WICKHAM, H. . Tidy Data. Journal of Statistical Software, [S. l.], v. 59, n. 10, p. 1–23, 2014. DOI: 10.18637/jss.v059.i10. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v059i10. Acesso em: 26 oct. 2021.