Athikomkulchai, S., Vayumhasuwan, P., Tunvichien, S., Piyapong, S., Malaipuang, S., & Ruangrungsi, N. (2018). The Development of Sunscreen Products from Kaempferia galanga. Journal of Health Research, 21(4), 253–256. retrieved from https://he01.tci-thaijo.org/index.php/jhealthres/article/view/154181