De recta ratione audiendi

Περὶ τοῦ ἀκούειν. Plutarch. Plutarchi Chaeronensis Moralia, Vol I. Vernardakēs, Grēgorios N., editor. Leipzig: Teubner, 1888.

Of Hearing (eng) Plutarch. Plutarch's Morals, Vol. I. Goodwin, William W., editor; Hoy, Thomas, translator. Boston: Little, Brown, and Company, 1874. On Listening to Lectures (eng) Plutarch. Moralia, Vol. I. Babbitt, Frank Cole, translator. Cambridge, MA: Harvard University Press. London: William Heinemann Ltd., 1927 (printing).