Parnell, J., J. Strijk, C. Maknoi, H. T. Luu, R. Pooma, S. Sirimongkol, W. Tichai, and N. Ritphet. “New Records Expand the Ranges of Christisonia Siamensis and Christisonia Scortechinii, the Latter Species Being New to Thailand”. Thai Forest Bulletin (Botany), no. 42, Dec. 2014, pp. 16-23, https://www.tci-thaijo.org/index.php/ThaiForestBulletin/article/view/24907.