Levitt, S. D., & Dubner, S. J. (2005). FREAKONOMICS: A Rogue Economist Explores the Hidden Side of Everything. William Morrow.
Chicago Style (17th ed.) ZitazioaLevitt, Steven D., eta Stephen J. Dubner. FREAKONOMICS: A Rogue Economist Explores the Hidden Side of Everything. New York: William Morrow, 2005.
MLA (9th ed.) ZitazioaLevitt, Steven D., eta Stephen J. Dubner. FREAKONOMICS: A Rogue Economist Explores the Hidden Side of Everything. William Morrow, 2005.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.