Macdonald, D. F. (1967). The age of transition: Britain in the nineteenth and twentieth centuries. Macmillan.
Lua i Stíl Chicago (17ú heag.)Macdonald, Donald Farquhar. The Age of Transition: Britain in the Nineteenth and Twentieth Centuries. London: Macmillan, 1967.
Lua MLA (9ú heag.)Macdonald, Donald Farquhar. The Age of Transition: Britain in the Nineteenth and Twentieth Centuries. Macmillan, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.