APA (7th ed.) Citation

Gul, S. (2007). Ruang Angkasa. Yudhistira.

Chicago Style (17th ed.) Citation

Gul, Sema. Ruang Angkasa. Yudhistira, 2007.

MLA (8th ed.) Citation

Gul, Sema. Ruang Angkasa. Yudhistira, 2007.

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