Gaya APA

Ahm, G., Novianti, E, N. (2018). Series why people : Winston Churchil (edisi 1). Jakarta: Gramedia Pustaka Utama.

Gaya MLA

Ahm, Gyeongsin., Novianti, Endah, Nawang. "Series why people : Winston Churchil". edisi 1 Jakarta: Gramedia Pustaka Utama, 2018. Text.