Sudarwati, Sri. 2019. “Mesodermal Competence of the Presumptive Ecto-Neuroderm at Various Developmental Stages, in Xenopus Laevis (Daudin)”. Journal of Mathematical and Fundamental Sciences 7 (1):17-26. https://journals.itb.ac.id/index.php/jmfs/article/view/9715.