Gaya APA

Riyanto, S., Suryani, L. (2024). The complete book of the IELTS Preparation : panduan persiapan tes IELTS (Ed. 1, Cet. 1). Yogyakarta: Andi.

Gaya MLA

Riyanto, Slamet., Suryani, Laila. "The complete book of the IELTS Preparation : panduan persiapan tes IELTS". Ed. 1, Cet. 1 Yogyakarta: Andi, 2024. Text.