APA (7th ed.) Citation
Hill, C. (1972). The world turned upside down: Radical ideas during the English Revolution. Penguin Books.
Chicago Style (17th ed.) Citation
Hill, Christopher. The World Turned Upside Down: Radical Ideas During the English Revolution. London: Penguin Books, 1972.
MLA (9th ed.) Citation
Hill, Christopher. The World Turned Upside Down: Radical Ideas During the English Revolution. Penguin Books, 1972.
Warning: These citations may not always be 100% accurate.