Gaya APA
Kasim, D, K. (2014).
National Geographic Indonesia: Oktober 2014 (Spinosaurus VS T. Rex) .
Jakarta:
National Geographic Society.
Gaya MLA
Kasim, Didi, Kasipi.
"National Geographic Indonesia: Oktober 2014 (Spinosaurus VS T. Rex)".
Jakarta:
National Geographic Society,
2014.
Text.