Hutauruk, Julia, and Julinawati Wau. “Analisis Nilai Tambah Dan Strategi Pemasaran Agroindustri Donat Kentang”. Jurnal Agriust 2, no. 2 (November 1, 2022): 58–66. Accessed July 22, 2024. https://ejournal.ust.ac.id/index.php/AGRIUST/article/view/2254.