Roslan, Syazili, Mohd Hudzari Haji Razali, and Wan Ishak Wan Ismail. 2012. “An Overview for the Application of Multispectral Device for Determination of Alkaloid Level in Dioscorea Hispida”. Scientific Journal of Review 1 (3):53-57. http://sjournals.com/index.php/sjr/article/view/681.