Gaya APA

Ryeol, K, S. (2011). Why? Origin Of Humankind and Civilization (Asal Mula Manusia dan Peradaban) . Jakarta: Elex Media Komputindo.

Gaya MLA

Ryeol, Kim, Seung. "Why? Origin Of Humankind and Civilization (Asal Mula Manusia dan Peradaban)". Jakarta: Elex Media Komputindo, 2011. Text.