Gaya APA
Gordon, R., Williams, B. (2011).
Closer: Petualangan Maut Melewati Gravitasi Nol .
Bandung:
Mizan Fantasi.
Gaya MLA
Gordon, Roderick., Williams, Brian.
"Closer: Petualangan Maut Melewati Gravitasi Nol".
Bandung:
Mizan Fantasi,
2011.
Fiction.