In the several types of speech put up for analysis in the following pages, the book aims to capture some characteristics of the style in the diachrony and synchrony of literary ideas. The work, divided into seven chapters, is addressed both to students, master's students and literature teachers, since the analysis of literary texts, without having a preference for an author, but starting from the aesthetic aspect of the literary text, is still a difficulty, even from the first secondary school classes. The novelty that what we propose is the analysis of a type of interdisciplinary discourse because we have noticed in recent years a tendency of both literary criticism for this type of discourse, as well as the composition of subjects for various competitions, especially for the baccalaureate, subjects that include requirements of this kind.