Kaenu, A., and S. Kongkham. “Antioxidant activity of Caesalpinia sappan heartwood extracts against oxidative stress induced by hydrogen peroxide in MRC-5 cell lines”. Chulalongkorn Medical Journal, vol. 69, no. 3, June 2025, https://he05.tci-thaijo.org/index.php/CMJ/article/view/5903.