FATRYANA, Tamara. PENGUKURAN RETURN ON INVESTMENT (ROI) DALAM KAMPANYE DIGITAL MARKETING. Jurnal Review Pendidikan dan Pengajaran, [S. l.], v. 6, n. 4, p. 1833–1837, 2023. DOI: 10.31004/jrpp.v6i4.21405. Disponível em: https://journal.universitaspahlawan.ac.id/index.php/jrpp/article/view/21405. Acesso em: 17 mar. 2026.