Arifin, Poppy F., et al. “Pengaruh Pola Tanam Tumpang Sari Terhadap Produktivitas Rimpang Dan Kadar Senyawa Aktif Temulawak (Curcuma Xanthorrhiza Roxb.)”. Jurnal Jamu Indonesia, vol. 2, no. 2, July 2017, pp. 51-59, https://doi.org/10.29244/jji.v2i2.32.