↑Areca catechu - the Areca palm. In botanical drawing from Köhler's Medizinal-Pflanzen - by Franz Eugen Köhler, in 1897.
12Charlie D. Heatubun, John Dransfield, Thomas Flynn, Sri S. Tjitrosoedirjo, Johanis P. Mogea & William J. Baker (2012). "A monograph of the betel nut palms (Areca: Arecaceae) of East Malesia". Botanical Journal of the Linnean Society. 168 (2): 147–173. doi:10.1111/j.1095-8339.2011.01199.x. Pemeliharaan CS1: Banyak nama: authors list (link)