SYAIFUL AHYAR; MUHAMAD RIMAWAN. Analisis Pengaruh Net Profit Margin (NPM), Gross Profit Margin (GPM), Return On Asset (ROA), Dan Return On Equity (ROE), Terhadap Harga Saham Pada PT Gajah Tunggal Tbk. Jurnal Penelitian Ekonomi Manajemen dan Bisnis, [S. l.], v. 2, n. 4, p. 35–53, 2023. DOI: 10.55606/jekombis.v2i4.2556. Disponível em: https://ejurnal.politeknikpratama.ac.id/index.php/jekombis/article/view/2556. Acesso em: 18 apr. 2025.