Carr E H. (1990). What Is History. Penguin Books.
Lua i Stíl Chicago (17ú heag.)Carr E H. What Is History. London: Penguin Books, 1990.
Lua MLA (9ú heag.)Carr E H. What Is History. Penguin Books, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.