Gaya APA

Levitt, S, D., Dubner, S, J. (2020). Freakonomics: Revised and Expanded Edition A Rogue Economist Explores The Hidden Side of Everything . New York, USA: Harper Collins Publishers.

Gaya MLA

Levitt, Steven, D., Dubner, Stephen, J. "Freakonomics: Revised and Expanded Edition A Rogue Economist Explores The Hidden Side of Everything". New York, USA: Harper Collins Publishers, 2020. Text.