Poetics. Longinus: On the Sublime. Demetrius: On Style (Revised) | Aristotle, Longinus, Demetrius, D A Russell
In PoeticsAristotle (384 322 BCE) treats Greek tragedy and epic. The subject of On the Sublime, attributed to an (unidentifiable) Longinus and probably composed in the first century CE is greatness in writing. On Style, attributed to an (unidentifiable) Demetrius and perhaps composed in the second century BCE, analyzes four literary styles.
Poetics. Longinus: On the Sublime. Demetrius: On Style (Revised) | 
