Marcus Tullius Cicero (1853). “The Academic Questions, Treatise de Finibus, and Tusculan Disputations, of Marcus Tullius Cicero: With a Sketch of the Greek Philosophers Mentioned by Cicero”, p.114
Robert Greene, La Serre (Jean-Puget, M. de) (1588). “Greene's "Pandosto" or "Dorastus and Fawnia": being the original of Shakespeare's "Winter's tale"”, p.9