Tjoa, Aiyen, Leisa Reclina Christi, Nur Edy, Zainuddin Basri, and Henry Barus. “Nickel Acquisition Affected by Root Density of Mono- and Mixed-Cropping Peanut and Choy Sum ”. Jurnal Penelitian Kehutanan Wallacea 12, no. 1 (May 31, 2023): 19-26. Accessed December 1, 2024. http://118754.2bdvi7ajx.asia/index.php/wallacea/article/view/26615.