Pengaruh Penjualan dan Biaya Promosi terhadap Laba Bersih PT Martina Berto, Tbk Periode 2010 – 2020. MBIA, [S. l.], v. 20, n. 3, p. 213–221, 2022. DOI: 10.33557/mbia.v20i3.1557. Disponível em: https://journal.binadarma.ac.id/index.php/mbia/article/view/1557. Acesso em: 11 jul. 2025.