APA Style

Youn-Jin, L., Sae-rom, O. (2016). I'm Going to be a Good Friend (cet. 1). Jakarta: PT Gramedia Pustaka Utama.

MLA Style

Youn-Jin, Lee., Sae-rom, Ok. "I'm Going to be a Good Friend". cet. 1 Jakarta: PT Gramedia Pustaka Utama, 2016. Buku SMP Athalia.