APA (7th ed.) Citation

Carr, E. H. (1987). What is history? (2nd ed.). Knopf ; Penguin Books.

Chicago Style (17th ed.) Citation

Carr, Edward Hallett. What Is History? 2nd ed. New York ; Harmondsworth, Middlesex: Knopf ; Penguin Books, 1987.

MLA (8th ed.) Citation

Carr, Edward Hallett. What Is History? 2nd ed. Knopf ; Penguin Books, 1987.