Gaya APA
Rizka, H., Hidayati, N, N. (2025).
Valid IELTS test preparation (Cet.1).
Yogyakarta:
Pustaka Baru Press.
Gaya MLA
Rizka, Haira., Hidayati, Niswatin, Nurul.
"Valid IELTS test preparation".
Cet.1
Yogyakarta:
Pustaka Baru Press,
2025.
Art Original.