Sources of Greek mythology

Greek mythology is known today primarily from Greek literature and representations on visual media dating from the Geometric period dating from c. 900-800 BC onward.

Prometheus (1868 by Gustave Moreau). The myth of Prometheus first was attested by Hesiodus and then constituted the basis for a tragic trilogy of plays, possibly by Aeschylus, consisting of Prometheus Bound, Prometheus Unbound, and Prometheus Pyrphoro

Literary sources
Mythical narration plays an important role in nearly every genre of Greek literature. Nevertheless, the only general mythographical handbook to survive from Greek antiquity was the Library of Pseudo-Apollodorus, which attempts to reconcile the contradictory tales of the poets and provides a grand summary of traditional Greek mythology and heroic legends. Apollodorus lived from c. 180-120 BC and wrote on many of these topics, however the "Library" discusses events that occurred long after his death, hence the name Pseudo-Apollodorus. Perhaps, his writings formed the basis of the collection.

Greek mythology

Greek mythology is the body of myths and legends belonging to the ancient Greeks concerning their gods and heroes, the nature of the world, and the origins and significance of their own cult and ritual practices. They were a part of religion in ancient Greece. Modern scholars refer to the myths and study them in an attempt to throw light on the religious and political institutions of Ancient Greece, its civilization, and to gain understanding of the nature of myth-making itself.