Gaya APA

PALMER, D. (2012). POCKET EYEWITNESS: EARTH, FACT AT YOUR FINGERTIPS . London: DORLING KINDERSLEY (DK).

Gaya MLA

PALMER, DOUGLAS. "POCKET EYEWITNESS: EARTH, FACT AT YOUR FINGERTIPS". London: DORLING KINDERSLEY (DK), 2012. Text.