Subehan, Yusnita Rifai, and Mufidah. “The Characterization and Anti-Osteoporotic Activity of Sappan Lignum (Caesalpinia Sappan L.) Extracts”. International Journal of Phytomedicine, vol. 5, no. 1, Mar. 2013, pp. 7-13, https://ijp.arjournals.org/index.php/ijp/article/view/222.