APA (7th ed.) Citation
Levitt, S. D., & Dubner, S. J. (2015). Think Like a Freak: How to Think Smarter about Almost Everything. Penguin Books.
Chicago Style (17th ed.) Citation
Levitt, Steven D., and Stephen J. Dubner. Think Like a Freak: How to Think Smarter About Almost Everything. [London]: Penguin Books, 2015.
MLA (9th ed.) Citation
Levitt, Steven D., and Stephen J. Dubner. Think Like a Freak: How to Think Smarter About Almost Everything. Penguin Books, 2015.
Warning: These citations may not always be 100% accurate.