Gaya APA
CHO, Y., Lee, Y.
(2019).
Why? : Science Theory Of Relativity
.
Jakarta:
PT. Elex Media Komputindo.
Gaya MLA
CHO, Youngsun., Lee, Youngho.
"Why? : Science Theory Of Relativity".
Jakarta:
PT. Elex Media Komputindo,
2019.
Text.