Greek Ancient Literature Research Books

The Complete Works of Plato (All of his works are listed in the description if you want to read them individually)

The Iliad and the Odyssey by Homer 

The Histories by Herodotus 

Antigone by Sophocles

The Oresteia by Aeschylus  

History of the Peloponnesian War by Thucydides 

Poetics by Aristotle