BIAYA PRODUKSI DAN HARGA JUAL TERHADAP PROFITABILITAS UMKM SEKTOR KULINER SAJI DI KECAMATAN PADANG UTARA. JSSR [Internet]. 2026 May 5 [cited 2026 May 6];9(2):2179-85. Available from: https://jurnal.goretanpena.com/index.php/JSSR/article/view/6155