Perkin, H. J. (1969). The origins of modern English society 1780-1880. Routledge & K. Paul.
Lua i Stíl Chicago (17ú heag.)Perkin, Harold James. The Origins of Modern English Society 1780-1880. London: Routledge & K. Paul, 1969.
Lua MLA (9ú heag.)Perkin, Harold James. The Origins of Modern English Society 1780-1880. Routledge & K. Paul, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.