Gaya APA

Slamet, ., Suryani, S, R, ;, L. (2021). The Complete Book of the IELTS Preparation (I). Yogyakarta: Andi.

Gaya MLA

Slamet, ., Suryani, Slamet, Riyanto, ;, Laila. "The Complete Book of the IELTS Preparation". I Yogyakarta: Andi, 2021. Text.