SUPOMO, S. Meningkatkan Kesejahteraan Pengrajin Gula Kelapa di Wilayah Kabupaten Purbalingga. Economic Journal of Emerging Markets, [S. l.], v. 12, n. 2, p. 149–162, 2009. DOI: 10.20885/ejem.v12i2.513. Disponível em: https://journal.uii.ac.id/JEP/article/view/513. Acesso em: 1 may. 2024.