Dani, Siska Rama, et al. “The Performance Machine Learning Powel-Beale for Predicting Rubber Plant Production in Sumatera”. International Journal of Engineering and Computer Science Applications (IJECSA), vol. 2, no. 1, Mar. 2023, pp. 31-40, https://doi.org/10.30812/ijecsa.v2i1.2420.