APA Style

Siregar, E. (2007). National Geographic Indonesia: Desember 2007 (Dinosaurus Ekstrem, Galeri Monster Fantastis) . Jakarta: National Geographic Society.

MLA Style

Siregar, Elwin. "National Geographic Indonesia: Desember 2007 (Dinosaurus Ekstrem, Galeri Monster Fantastis)". Jakarta: National Geographic Society, 2007. Text.