Gaya APA

Nawang, E. (2019). Why? Theory of relativity: Teori relativitas (Cet. 1). Jakarta: PT. Elex Media Komputindo.

Gaya MLA

Nawang, Endah. "Why? Theory of relativity: Teori relativitas". Cet. 1 Jakarta: PT. Elex Media Komputindo, 2019. Text.