Purba, R. H. S., and J. . 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, vol. 4, no. 2, Feb. 2025, pp. 631-40, doi:10.61445/tofedu.v4i2.476.