De Pythiae oraculis

Περὶ τοῦ μὴ χρᾶν ἔμμετρα νῦν τὴν Πυθίαν Plutarch. Plutarchi Chaeronensis Moralia, Vol II. Vernardakēs, Grēgorios N., editor. Leipzig: Teubner, 1891.

Wherefore the Pythian Priestess now Ceases to Deliver her Oracles in Verse (eng) Plutarch. Plutarch's Morals, Vol. III. Goodwin, William W., editor; Philips, John, translator. Boston: Little, Brown, and Company; Cambridge: Press of John Wilson and Son, 1874. The Oracle at Delphi no Longer Given in Verse (eng) Plutarch. Moralia, Vol. V. Babbitt, Frank Cole, translator. Cambridge, MA: Harvard University Press; London: William Heinemann Ltd., 1936 (printing).