Kenedy, Eduardo. “Heterogeneity and Homogeneity in Languages: A Historical Perspective on the Rise of the Multiple Grammars Theory and an Analysis on Clause Relationships in Brazilian Portuguese Sentences”. Cadernos de Linguística 2, no. 1 (March 14, 2021): 01-17. Accessed April 17, 2021. https://cadernos.abralin.org/index.php/cadernos/article/view/327.