Muenrew, Janjira. “Effects of Different Nitrogen Forms on Growth, Phenolic Content, and Antioxidant Activity in Hedychium Flavescens and H. Stenopetalum (Zingiberaceae)”. Health Science, Science and Technology Reviews 13, no. 2 (August 31, 2020): 18–26. Accessed May 3, 2024. https://li01.tci-thaijo.org/index.php/journalup/article/view/245241.