.S., .H., RahardjoB., and MarsenoD. W. “Antioxidant Activity of Crude Polyphenol Extract from Microwave Roasted Cocoa Bean”. Jurnal Teknologi Dan Industri Pangan, Vol. 17, no. 3, May 2010, p. 176, https://jurnal.ipb.ac.id/index.php/jtip/article/view/440.