Gaya APA

LEVIT, S, D., DUBNER, S, J. (). FREAKONOMICS by Steven D. Levitt & Dubner (1). : PENGUIN BOKS.

Gaya MLA

LEVIT, STEVEN, D.., DUBNER, STEPHEN, J. "FREAKONOMICS by Steven D. Levitt & Dubner". 1 : PENGUIN BOKS, . Text.