Samudra, F. B., Sitorus, . S. R., Santosa, E., & Machfud, M. (2022). Systems dynamic modeling on sustainable apples agriculture. Jurnal Pengelolaan Sumberdaya Alam Dan Lingkungan (Journal of Natural Resources and Environmental Management), 11(4), 567-577. https://doi.org/10.29244/jpsl.11.4.567-577