Gaya APA
Lugina, Widi. (2009).
George's Secret Key To The Universe .
Jakarta:
Gramedia Pustaka Utama.
Gaya Chicago
Lugina, Widi.
George's Secret Key To The Universe.
Jakarta:
Gramedia Pustaka Utama,
2009.
Text.
Gaya MLA
Lugina, Widi.
George's Secret Key To The Universe.
Jakarta:
Gramedia Pustaka Utama,
2009.
Text.
Gaya Turabian
Lugina, Widi.
George's Secret Key To The Universe.
Jakarta:
Gramedia Pustaka Utama,
2009.
Print.