SamudraF. B., Sitorus S. R., SantosaE., & MachfudM. (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