Gaya APA
rooy, R, D. (2007).
Prepare For Ielts Skills and Strategies Book one Listening and Speaking .
Jakarta:
Gramedia Pustaka Utama.
Gaya MLA
rooy, Rae, De.
"Prepare For Ielts Skills and Strategies Book one Listening and Speaking".
Jakarta:
Gramedia Pustaka Utama,
2007.
Text.