Theakston, K. (2004). British foreign secretaries since 1974. Routledge.
Lua i Stíl Chicago (17ú heag.)Theakston, Kevin. British Foreign Secretaries Since 1974. London ; New York: Routledge, 2004.
Lua MLA (9ú heag.)Theakston, Kevin. British Foreign Secretaries Since 1974. Routledge, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.