Tampubolon, Jimmy Saputra, Juli Pangaribuan, and Nadya Deswita. “Blue Band Advertisements in Newspapers From 1900”. Holistic Science 4, no. 2 (June 6, 2024): 181–187. Accessed July 27, 2025. https://jurnal.larisma.or.id/index.php/HS/article/view/583.