ERNAYUNITA, E.; WENING, S.; Y RAHMADI, H.; YENNI, Y.; TARYONO, T. Conservation of Pisifera Genetic Resources: Callogenesis of 41 Years Old SP540T - Derived Oil Palm. Jurnal Penelitian Kelapa Sawit, v. 29, n. 2, p. 73-80, 24 Aug. 2021.