APA (7th ed.) Citation

YOO, G. (2017). Why? United Kingdoom. Elex Media Komputindo.

Chicago Style (17th ed.) Citation

YOO, Giyeong. Why? United Kingdoom. Elex Media Komputindo, 2017.

MLA (8th ed.) Citation

YOO, Giyeong. Why? United Kingdoom. Elex Media Komputindo, 2017.

Warning: These citations may not always be 100% accurate.