Agunginardi, Muhammad Briyan, et al. “MORAL VALUE VIOLATIONS IN AN AMERICAN TRAGEDY NOVEL BY THEODORE DREISER (A Study of Psychoanalisis)”. Bahtera: Jurnal Pendidikan Bahasa Dan Sastra, vol. 18, no. 1, Jan. 2019, pp. 101-6, doi:10.21009/BAHTERA.181.09.