Guimarães, S. A. H., and H. R. de Mendonça Ferreira. “The Intentionality Marked in Instructional Texts: What’s New in It?”. Signum: Estudos Da Linguagem, vol. 19, no. 1, Jan. 2017, pp. 369-95, doi:10.5433/2237-4876.2016v19n1p369.