Gaya APA
Levitt, S, D., Dubner, S, J.
(2015).
Think Like a Freak
.
JAKARATA:
Noura Books.
Gaya MLA
Levitt, Steven, D.., Dubner, Stephen, J..
"Think Like a Freak".
JAKARATA:
Noura Books,
2015.
Text.