Gaya APA
Training, I, O, E, L. (2023).
Buku Pintar IELTS: International English Language Testing System .
Yogyakarta:
Bentang.
Gaya MLA
Training, Institute, Of, English, Language.
"Buku Pintar IELTS: International English Language Testing System".
Yogyakarta:
Bentang,
2023.
Text.