Gaya APA

Ron, L, Y, /, O, S. (2016). I m Going To Be A Good Friend (Cet. 1). Jakarta: Gramedia Pustaka Utama.

Gaya MLA

Ron, Lee, Youn-jin, /, Ok, Sae. "I m Going To Be A Good Friend". Cet. 1 Jakarta: Gramedia Pustaka Utama, 2016. Text.