APA Citation

Sagan, C. (2019). Kosmos. Kepustakaan Populer Gramedia.

Chicago Style Citation

Sagan, Carl. Kosmos. Kepustakaan Populer Gramedia, 2019.

MLA Citation

Sagan, Carl. Kosmos. Kepustakaan Populer Gramedia, 2019.

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