RUSTAN, Surianto. Kajian Desain Logo IBM Tahun 1972 Sebagai Brand Global. Ultimart: Jurnal Komunikasi Visual, [S. l.], v. 9, n. 1, p. 14–37, 2018. DOI: 10.31937/ultimart.v9i1.734. Disponível em: https://ejournals.umn.ac.id/index.php/FSD/article/view/734. Acesso em: 4 jul. 2025.