Azizah, R., and S. I. Sa’adah. “An Ecocritical Analysis of Young Adult Dystopian Novel in Veronica Rossi’s Under The Never Sky”. NOBEL: Journal of Literature and Language Teaching, vol. 8, no. 1, Apr. 2017, pp. 22-34, doi:10.15642/NOBEL.2017.8.1.22-34.