Mugijatna, M., S. Habsari, and Y. Putri. “Rick Riordan’s Intention in Writing Percy Jackson and the Lightning Thief and the Reception of the Readers”. K@ta: A Biannual Publication on the Study of Languange and Literature, Vol. 16, no. 2, Jan. 2015, pp. 77-86, doi:https://doi.org/10.9744/kata.16.2.77-86.