Asra, R., A. T. Maryani, M. Muazza, E. Permana, F. Wahyuni, A. N. Hidayat, E. M. A. Br Nainggolan, and R. Fadli. “Economic Value of the Use of Low-Quality Betara Areca Nuts As a Natural Dye”. Proceeding International Conference on Religion, Science and Education, vol. 5, Aug. 2026, pp. 1915-27, http://sunankalijaga.org/prosiding/index.php/icrse/article/view/1922.