APA Citation

Johnson. (2014). How we got to now: Six innovations that made the modern world. New York: Penguin Group.

Chicago Style Citation

Johnson. How We Got to Now: Six Innovations That Made the Modern World. New York: Penguin Group, 2014.

MLA Citation

Johnson. How We Got to Now: Six Innovations That Made the Modern World. New York: Penguin Group, 2014.

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