Wibowo, Suhermanto Agung. “DISAIN PISAU SADAP MANUAL UNTUK MENGOPTIMALKAN PRODUKSI TANAMAN KARET (HEVEA BRASILIENSIS)”. Jurnal Penelitian Karet 35, no. 2 (January 31, 2018): 179–188. Accessed July 3, 2024. https://ejournal.puslitkaret.co.id/index.php/jpk/article/view/400.