‘Mr. Costa’s ist the first detailed commentary ever to be produced in English on a Senecan tragedy. He gives all the linguistic and metrical help an undergraduate might need. He cites the relevant Euripidean parallels, and, without speculating on the contents of Ovid’s Medea, he provides the parallel material from Heroides and Metamorphoses. (…) His notes, without being ponderous, are meaty and discriminating.’ (MICHAEL WINTERBOTTOM in The Classical Review (New Series), 1976, p.39).