Gaya APA
Kyung-Cheol, C.
(2009).
Why? The Universe Alam Semesta
(
C.1)
.
Jakarta:
Penerbit PT Elex media komputindo.
Gaya MLA
Kyung-Cheol, Cho.
"Why? The Universe Alam Semesta".
C.1
Jakarta:
Penerbit PT Elex media komputindo,
2009.
Text.