Majapun, Richard Joseph, et al. “Rooted Cutting of Gymnostoma Sumatranum for Land Reclamation in Degraded Ultramafic Forests in Sabah”. Journal of Sustainable Natural Resources, vol. 5, no. 1, July 2024, pp. 20-34, https://publisher.uthm.edu.my/ojs/index.php/jsunr/article/view/17447.