Hughes, Mark, Sadie Barber, Charlie D. Heatubun, and Janet Gagul. “Begonia Yapenensis (sect. Symbegonia, Begoniaceae), a New Species from Papua, Indonesia”. European Journal of Taxonomy, no. 119 (April 10, 2015). Accessed April 26, 2026. https://ejt.sandbox.publicknowledgeproject.org/index.php/ejt/article/view/239.