APA Citation

Ridley, M. (2019). How many light bulbs does it take to change the world? London: Institute of Economic Affairs.

Chicago Style Citation

Ridley, Matt. How Many Light Bulbs Does It Take to Change the World? London: Institute of Economic Affairs, 2019.

MLA Citation

Ridley, Matt. How Many Light Bulbs Does It Take to Change the World? London: Institute of Economic Affairs, 2019.

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