Farida, F., and H. Sultan. “ANALISIS PROFITABILITAS USAHA SAMBAL IKAN ROA PADA INDUSTRI SOFIE LOCALFOOD DI KOTA PALU”. AGROTEKBIS : JURNAL ILMU PERTANIAN (e-Journal), Vol. 10, no. 6, Dec. 2022, pp. 1075 -81, http://103.245.72.23/index.php/agrotekbis/article/view/1565.