Gaya APA

Riordan, R. (2021). Percy Jackson and The Olympians 4 : The battle of the labyrinth (Cet. 17). Bandung: Noura Books.

Gaya MLA

Riordan, Rick. "Percy Jackson and The Olympians 4 : The battle of the labyrinth". Cet. 17 Bandung: Noura Books, 2021. Text.