Ergen, A., B. G. Baykan, and S. G. Turan. “Effect of Materialism and Environmental Knowledge on Environmental Consciousness Among High School Students: A Study Conducted in Istanbul Province”. Journal of Human Sciences, vol. 12, no. 1, Feb. 2015, pp. 511-26, https://www.j-humansciences.com/ojs/index.php/IJHS/article/view/3130.