Gaya APA

Pyeon, W., Wijayanti, D, A. (2021). Why? People : Leonardo da Vinci . Jakarta: Elex Media Komputindo.

Gaya MLA

Pyeon, Wangjung., Wijayanti, Dhania, Astrini. "Why? People : Leonardo da Vinci". Jakarta: Elex Media Komputindo, 2021. Text.