Gaya APA
Riyanto, S., Suryani, L. (2024).
The Complete Book of the IELTS Preparation - Edisi Revisi .
Yogyakarta:
ANDI.
Gaya MLA
Riyanto, Slamet., Suryani, Laila.
"The Complete Book of the IELTS Preparation - Edisi Revisi".
Yogyakarta:
ANDI,
2024.
".