Malian, A. Husni, and Aman Djauhari. “Upaya Perbaikan Kualitas Bahan Olah Karet Rakyat”. Forum Penelitian Agro Ekonomi, vol. 17, no. 2, Sept. 2016, pp. 43-50, https://epublikasi.pertanian.go.id/berkala/fae/article/view/1344.