Usman U, Soekamto NH, Natsir M, Maulidiyah M. Isolation of Natural Derivated Steroidal from Bark Stem of Melochia umbellata (Houtt) Stapf var. degrabrata K. ajc [Internet]. 2020 Feb. 25 [cited 2024 Nov. 25];32(4):765-70. Available from: https://asianpubs.org/index.php/ajchem/article/view/32_4_7