"The Rhetoric" and "The Poetics" (Trans. W. Rhys Roberts and Ingram Bywater)

There is no Aristotelian rhetoric of historiography, but see Aristotle's discussion of forensic rhetoric, of which the rhetoric of historiography has sometimes been considered a branch. The emphasis is on persuasion rather than on what actually happened. See #Kessler, "Das rhetorische Modell."
(Abstract via Allan Megill)