Rees-Jones, D. (2010). Carol Ann Duffy (3rd ed.). Northcote House.
Lua i Stíl Chicago (17ú heag.)Rees-Jones, Deryn. Carol Ann Duffy. 3rd ed. Tavistock, Devon, U.K.: Northcote House, 2010.
Lua MLA (9ú heag.)Rees-Jones, Deryn. Carol Ann Duffy. 3rd ed. Northcote House, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.