APA (7th ed.) Citation

Day, J. P. (1939). An introduction to world economic history since the great war. Macmillan.

Chicago Style (17th ed.) Citation

Day, John P. An Introduction to World Economic History Since the Great War. London: Macmillan, 1939.

MLA (9th ed.) Citation

Day, John P. An Introduction to World Economic History Since the Great War. Macmillan, 1939.