TIPM. Arif Darmawan, Bangkit Wiguna, Marimin, Machfud. 1. “INCREASING THE PRODUCTIVITY OF NATURAL RUBBER PRODUCTION PROCESS WITH GREEN PRODUCTIVITY APPROACH: CASE STUDY IN PT X”. Jurnal Teknologi Industri Pertanian 22 (2). https://journal.ipb.ac.id/index.php/jurnaltin/article/view/6722.