Khoirudin, Rifki. “DETERMINAN KEBAHAGIAAN PEMULUNG (STUDI KASUS DI TEMPAT PEMBUANGAN SAMPAH TERPADU PIYUNGAN)”. I-ECONOMICS: A Research Journal on Islamic Economics, vol. 3, no. 1, Oct. 2017, pp. 38-50, https://jurnal.radenfatah.ac.id/index.php/ieconomics/article/view/1518.