Yusriana, Y., Arkeman, Y., Raharja, S., & Hariyadi, P. (2015). The Model to Prove the Authenticity of Cocoa Beans Based on Intelligent System. International Journal of Sciences: Basic and Applied Research (IJSBAR), 24(1), 95-104. https://www.gssrr.org/JournalOfBasicAndApplied/article/view/4385