APA (7e ed.) Bronvermelding

Levitt,D. Steven, & Dubner,j. stephen. (2005). Freakonomics A ROgue Economist Expiores the HIdden Side OF Everything (NA.). Published by the penguin.

Chicago (17e ed.) Bronvermelding

Levitt,D. Steven, en Dubner,j. stephen. Freakonomics A ROgue Economist Expiores the HIdden Side OF Everything. NA. New york: Published by the penguin, 2005.

MLA (9e ed.) Bronvermelding

Levitt,D. Steven, en Dubner,j. stephen. Freakonomics A ROgue Economist Expiores the HIdden Side OF Everything. NA. Published by the penguin, 2005.