Fokaaya, Nurhayati. “Language Expression As Social Criticism on Iwan Fals’ Songs”. Gramatika: Jurnal Ilmiah Kebahasaan dan Kesastraan 3, no. 1 (June 1, 2015): 93-99. Accessed January 10, 2025. http://118.98.227.77/index.php/gramatika/article/view/124.