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Singh, B., D. Adhikari, SK. Barik, & A. Chettri. 2013. "Pterocymbium tinctorium (Merrill, 1901) (Magnoliophyta: Malvales: Sterculiaceae: Sterculioideae): New record from mainland India and extension of geographic distribution". Check List9(3): 622–5, 2013.Diarsipkan 2015-09-23 di Wayback Machine.
Singh, B., D. Adhikari, SK. Barik, & A. Chettri. 2013. "Pterocymbium tinctorium (Merrill, 1901) (Magnoliophyta: Malvales: Sterculiaceae: Sterculioideae): New record from mainland India and extension of geographic distribution". Check List9(3): 622–5, 2013.Diarsipkan 2015-09-23 di Wayback Machine.