Khoirudin, R. (2017). DETERMINAN KEBAHAGIAAN PEMULUNG (STUDI KASUS DI TEMPAT PEMBUANGAN SAMPAH TERPADU PIYUNGAN). I-ECONOMICS: A Research Journal on Islamic Economics, 3(1), 38-50. https://jurnal.radenfatah.ac.id/index.php/ieconomics/article/view/1518