Gaya APA
Yulius, . (2015).
School quiz : Bumi dan antariksa / Elek Media Komputindo (1).
Jakarta ::
PT. Elex Media Komputindo,.
Gaya MLA
Yulius, .
"School quiz : Bumi dan antariksa / Elek Media Komputindo".
1
Jakarta ::
PT. Elex Media Komputindo,,
2015.
Text.