Mahardika, Robby Gus, and Occa Roanisca. 2019. “Microwave-Assisted Extraction of Polyphenol Content from Leaves of Tristaniopsis Merguensis Griff”. ASEAN Journal of Chemical Engineering 19 (2), 110-19. https://journal.ugm.ac.id/v3/AJChE/article/view/9087.