KUSMAWATI. PENGARUH BIAYA R&D BIAYA IKLAN TERHADAP KINERJA LABA. Jurnal Keuangan dan Bisnis, [S. l.], v. 18, n. 1, p. 179–190, 2021. Disponível em: http://320227.wm3lefoa6.asia/index.php/jkb/article/view/52. Acesso em: 18 jan. 2025.