** Kerenyi, Carl, ''The Gods of the Greeks'' 1951 (paperback 1980)
** Kerenyi, Karl, 1959. ''The Heroes of the Greeks'' Especially Heracles.
*+ * Kirk, G. S., J. E. Raven, M. Schofield, ''The Presocratic Philosophers: A Critical History with a Selection of Texts'', Cambridge University Press, Dec 29, 1983. ISBN:9780521274555.
** Ogden, Daniel (2013a), ''Drakon: Dragon Myth and Serpent Cult in the Greek and Roman Worlds'', Oxford University Press, 2013. ISBN:9780199557325.
** Ogden, Daniel (2013b), ''Dragons, Serpents, and Slayers in the Classical and early Christian Worlds: A sourcebook'', Oxford University Press. ISBN:978-0-19-992509-4.