MUSTAQMAH, Sri Asyrafil; WULANDARI , Sri. Pengaruh Efisiensi Biaya Bahan Baku, Biaya Tenaga Kerja Langsung Dan Biaya Overhead Pabrik Terhadap Rasio Gross Profit Margin Pada D’besto Parkiran Diva Cabang Bukittinggi . Innovative: Journal Of Social Science Research, [S. l.], v. 3, n. 5, p. 5959–5977, 2023. Disponível em: https://j-innovative.org/index.php/Innovative/article/view/5479. Acesso em: 24 aug. 2026.