Multiple Regression Model on Selling Price, Sales Volume, Raw Material Costs, and Direct Labor Costs on Profit. Jurnal Varian, [S. l.], v. 8, n. 2, p. 221–232, 2025. DOI: 10.30812/mqvzph91. Disponível em: https://journal.universitasbumigora.ac.id/Varian/article/view/4476. Acesso em: 24 sep. 2025.