Ningsih, V. A.; Alfiati, S. The Influence of Product Price and Cost of Goods Sold on The Profit of Vegetable Traders in the Modern Traditional Market of Prabumulih City: Pengaruh Harga Barang Dan Harga Pokok Penjualan Terhadap Laba Pedagang Sayur Di Pasar Tradisional Modern Kota Prabumulih. mep 2024, 8, 63-69.