1. CCRC, Ensiklopedia Tanam. Anti Kanker, Cancer Chemoprevention Res. Cent. Fak. Farm. Univ. Gadjah Mada (2011).
2. D. H. Nicolson and M. Sivadasan, Blumea J. Plant Taxon. Plant Geogr. 27, 483 (1981).
3. M. R. Hariri and I. I. N. P. A. Husaini, in Pros. Semin. Nas. Biol. Di Era Pandemi COVID-19 (2020), pp. 87–96.
4. K. Royal Botanical Garden, (2021).
5. C. B. Teo CK, Cancer—Yet They Live, Revised ed (CA Care, Penang, Malaysia, 1999).