Theresia Ginting*, Yunita T.S. Bire dan Hildegardis Tuga Siga. “PERBEDAAN LIMBAH BUAH TERHADAP PERUBAHAN WARNA ECO-ENZYME”. Prosiding Seminar Nasional Hasil-Hasil Penelitian, vol. 6, no. 1, Feb. 2024, pp. 490-7, http://ejurnal.politanikoe.ac.id/index.php/psnp/article/view/301.