Nabilla, Alfira, and Anny Sartika Daulay. 2024. “Determination of Secondary Metabolite Content of Phenolic Group from Liquid Smoke of Coconut Shell and Husk (Cocos Nucifera L.) Using Visible Spectrophotometry”. Science Midwifery 12 (5):1817-27. https://www.midwifery.iocspublisher.org/index.php/midwifery/article/view/1793.