Purba, Roganda Helena Sanzelina, and Janpatar Simamora. “The Responsibility of Electronic Cigarette (e-Cigarette) Business Operators Who Do Not Include Information Labels and Warnings According to Law Firm Tomi Sihotang & Partners”. TOFEDU: The Future of Education Journal 4, no. 2 (February 28, 2025): 631–640. Accessed July 12, 2025. https://journal.tofedu.or.id/index.php/journal/article/view/476.