SIAHAAN, S.; NASUTION, S. L.; PITRIYANI, P. Pengaruh Persaingan Harga, Tempat Dan Produk Terhadap Penjualan Pedagang Sayur Di Pagi Hari (Di Pasar Gelugur Rantauprapat). Management Studies and Entrepreneurship Journal (MSEJ), [S. l.], v. 4, n. 5, p. 6183–6192, 2024. DOI: 10.37385/msej.v4i5.1860. Disponível em: https://www.yrpipku.com/journal/index.php/msej/article/view/1860. Acesso em: 6 jul. 2025.