R. Khoirudin, “DETERMINAN KEBAHAGIAAN PEMULUNG (STUDI KASUS DI TEMPAT PEMBUANGAN SAMPAH TERPADU PIYUNGAN)”, Economics, vol. 3, no. 1, pp. 38–50, Oct. 2017, Accessed: Apr. 04, 2025. [Online]. Available: https://jurnal.radenfatah.ac.id/index.php/ieconomics/article/view/1518