Gaya APA
RIYANTO, S.
(2021).
The Complete Book of the IELTS Preparation
(
1)
.
Yogyakarta:
CV.Andi Offset.
Gaya MLA
RIYANTO, Slamet.
"The Complete Book of the IELTS Preparation".
1
Yogyakarta:
CV.Andi Offset,
2021.
BUKU.