APA (7th ed.) Citation

Zen, S. (2019). Summer Sky. Gramedia Pustaka Utama.

Chicago Style (17th ed.) Citation

Zen, Stephanie. Summer Sky. Gramedia Pustaka Utama, 2019.

MLA (8th ed.) Citation

Zen, Stephanie. Summer Sky. Gramedia Pustaka Utama, 2019.

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