Syarif, Nur Yulia, and Waridin Waridin. “An Integrated Pest Management System Development: An Economic Valuation Analysis”. Jurnal Ekonomi & Studi Pembangunan 21, no. 2 (October 15, 2020): 208–221. Accessed May 2, 2025. https://journal.umy.ac.id/index.php/esp/article/view/7872.