Rohyami, Yuli. “PENENTUAN Cu, Cd DAN Pb DENGAN AAS MENGGUNAKAN SOLID PHASE EXTRACTION”. AJIE (Asian Journal of Innovation and Entrepreneurship) 2, no. 01 (October 22, 2015): 19–25. Accessed December 5, 2025. https://journal.uii.ac.id/ajie/article/view/3163.