Gaya APA
Riyanto, S., Suryani, L. (2021).
The Complete Book Of The IELTS Preparation : Panduan Persiapan Tes IELTS (Ed. I).
Yogyakarta:
ANDI.
Gaya MLA
Riyanto, Slamet., Suryani, Laila.
"The Complete Book Of The IELTS Preparation : Panduan Persiapan Tes IELTS".
Ed. I
Yogyakarta:
ANDI,
2021.
Text.