APA (7th ed.) Citation

Porter, R. (1990). English society in the eighteenth century. Penguin Books.

Chicago Style (17th ed.) Citation

Porter, Roy. English Society in the Eighteenth Century. Penguin Books, 1990.

MLA (9th ed.) Citation

Porter, Roy. English Society in the Eighteenth Century. Penguin Books, 1990.

Warning: These citations may not always be 100% accurate.