Carr, E., & Davies, R. (1987). What is History ? The George Macaulay Trevelyan Lectures Delivered in the University of Cambridge January-March 1961 (2nd ed.). Penguin.

Carr, E.H, and R.W Davies. What Is History ? The George Macaulay Trevelyan Lectures Delivered in the University of Cambridge January-March 1961. 2nd ed. London: Penguin, 1987.

Carr, E.H, and R.W Davies. What Is History ? The George Macaulay Trevelyan Lectures Delivered in the University of Cambridge January-March 1961. 2nd ed. Penguin, 1987.