Gaya APA
Ryeol, K, S. (2011).
Why? Original Of Humankind And Civilization = Asal Mula Manusia dan Peradaban .
Jakarta ::
Elex Media Komputindo.
Gaya MLA
Ryeol, Kim, Seung.
"Why? Original Of Humankind And Civilization = Asal Mula Manusia dan Peradaban".
Jakarta ::
Elex Media Komputindo,
2011.
Text.