Gaya APA

Druyan, A., Anshor, Z. (2021). Kosmos : Possible Worlds : Aneka Ragam Dunia (Second Edition). Jakarta, Indonesia: Gramedia Pustaka Utama.

Gaya MLA

Druyan, Ann., Anshor, Zia. "Kosmos : Possible Worlds : Aneka Ragam Dunia". Second Edition Jakarta, Indonesia: Gramedia Pustaka Utama, 2021. Academic.