Mitchell, J. (2005). Personal commentary. Oxford Institute for Energy Studies.
Lua i Stíl Chicago (17ú heag.)Mitchell, J. Personal Commentary. Oxford Institute for Energy Studies, 2005.
Lua MLA (9ú heag.)Mitchell, J. Personal Commentary. Oxford Institute for Energy Studies, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.