Gaya APA
lebah, P. (2008).
Space Exploration (Fun Facts and Stories Behind) Space Journey (2012).
Jakarta Selatan:
pustaka lebah.
Gaya MLA
lebah, Pustaka.
"Space Exploration (Fun Facts and Stories Behind) Space Journey".
2012
Jakarta Selatan:
pustaka lebah,
2008.
Teks Fisik.