Gaya APA

Levitt, S, D., Dubner, S, J. (2020). Freakonomics: A Rogue Economist Explores the Hidden Side of Everything (Ed.21). New York, USA: William Morrow (Imprint dari Harper Collins).

Gaya MLA

Levitt, Steven, D.., Dubner, Stephen, J.. "Freakonomics: A Rogue Economist Explores the Hidden Side of Everything". Ed.21 New York, USA: William Morrow (Imprint dari Harper Collins), 2020. book.