Rahayu, R. , Ahda, M.. "The Correlation of Total Phenol Content with Free Radicals Scavenging Activity and Effect of Ethanol Concentration in Extraction Process of Mangosteen Rind (Garcinia mangostana)". World Academy of Science, Engineering and Technology, Open Science Index 110, International Journal of Chemical and Molecular Engineering, (2016), 10(2), 279 - 282.