William Morris (1871). “The Earthly Paradise: December: The golden apples; The fostering of Aslaug. January: Bellerophon at Argos; The ring given to Venus. February: Bellerophon in Lycia; The hill of Venus. Epilogue. L'envoi”, p.368
William Morris, May Morris (2012). “The Collected Works of William Morris: With Introductions by His Daughter May Morris”, p.82, Cambridge University Press