Professor Richard J. Evans (2001). "The Two Faces of E.H. Carr". History in Focus, Issue 2: What is History?. University of London. Dicapai pada 10 November 2008.
Professor Alun Munslow (2001). "What History Is". History in Focus, Issue 2: What is History?. University of London. Dicapai pada 10 November 2008.