Sumardjani, Lisman. “Konsep Lima Kekuatan Porter Untuk Membedah Kondisi Industri Rotan Indonesia (The Concept of Porter‘s Five Forces in Evaluating Indonesian Rattan Industry)”. Jurnal Manajemen Hutan Tropika 15, no. 1 (1): 41-44. Accessed April 26, 2024. https://journal.ipb.ac.id/index.php/jmht/article/view/3236.