King, A. S. (1969). The British Prime Minister: A reader. Macmillan.
Lua i Stíl Chicago (17ú heag.)King, Anthony Stephen. The British Prime Minister: A Reader. London: Macmillan, 1969.
Lua MLA (9ú heag.)King, Anthony Stephen. The British Prime Minister: A Reader. Macmillan, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.