Cita APA

Levitt, S. D. (2006). Freakonomics. Penguin books.

Citación estilo Chicago

Levitt, Steven D. Freakonomics. London: Penguin books, 2006.

Cita MLA

Levitt, Steven D. Freakonomics. Penguin books, 2006.

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