John Dryden (1993). “The Works of John Dryden, Volume XIV: Plays; The Kind Keeper, The Spanish Fryar, The Duke of Guise, and The Vindication”, p.116, Univ of California Press
John Dryden (1717). “The Dramatick Works of John Dryden, Esq: Don Sebastian, king of Portugal. Amphitryon: or, The two Sosia's. Cleomenes, the Spartan heroe. King Arthur. Love triumphant”