Komarudin Afz, F. (2012). Layanan Calistung Terhadap Anak Pemulung (Calistung Learning Service For The Children Who Work As A Scavenger). JURNAL PENGABDIAN KEPADA MASYARAKAT, 2(1), 29–39. Retrieved from http://ojs.uninus.ac.id/index.php/JPKM/article/view/29