Gaya APA
Riyanto, S.
(2024).
The Complete Book of The IELTS Preparation Edisi Revisi
.
Yogjakarta:
ANDI.
Gaya MLA
Riyanto, Slamet.
"The Complete Book of The IELTS Preparation Edisi Revisi".
Yogjakarta:
ANDI,
2024.
Text.