VERACHAI, V. The Pilot study of Effectiveness of Vernonia Cinerea (L) Less for 4 weeks in smoking cessation. Thai Journal of Addiction, Patumtani, Thailand, v. 3, n. 1-2, p. 1–16, 2015. Disponível em: https://he01.tci-thaijo.org/index.php/pmnidat/article/view/248707. Acesso em: 16 sep. 2026.