Ritonga, Y. E., D. Girmansyah, and W. A. Mustaqim. “Begonia elegantifolia (Begoniaceae), a New Species from Northern Sumatra, Indonesia”. Phytotaxa, vol. 720, no. 1, Sept. 2025, pp. 87-92, doi:10.11646/phytotaxa.720.1.9.