Gaya APA

Riyanto, S., Suryani, L. (2024). The complete book of the IELTS preparation (Edisi Revisi). Yogyakarta: Andi.

Gaya MLA

Riyanto, Slamet., Suryani, Laila. "The complete book of the IELTS preparation". Edisi Revisi Yogyakarta: Andi, 2024. Text.