Gaya APA
Somadinata, Y. (2020).
When, What, Why, Who, Where, & How Alam Semesta (Cet. 1).
Jakarta:
PT. Elex Media Komputindo.
Gaya MLA
Somadinata, Yusup.
"When, What, Why, Who, Where, & How Alam Semesta".
Cet. 1
Jakarta:
PT. Elex Media Komputindo,
2020.
Buku.