Gaya APA
Levitt, Steven D.. (2005).
Freakonomics : a rogue economist explores the hidden side of everything .
New York:
HarperCollins.
Gaya Chicago
Levitt, Steven D..
Freakonomics : a rogue economist explores the hidden side of everything.
New York:
HarperCollins,
2005.
Text.
Gaya MLA
Levitt, Steven D..
Freakonomics : a rogue economist explores the hidden side of everything.
New York:
HarperCollins,
2005.
Text.
Gaya Turabian
Levitt, Steven D..
Freakonomics : a rogue economist explores the hidden side of everything.
New York:
HarperCollins,
2005.
Print.