PANDIANGAN, DINGSE, and NELSON NAINGGOLAN. “The Enhancement of Catharanthine Content in Catharanthus Roseus Callus Culture Treated With Naphtalene Acetic Acid”. HAYATI Journal of Biosciences 13, no. 3 (December 2, 2009): 90. Accessed December 23, 2025. https://journal.ipb.ac.id/hayati/article/view/213.