Bosma, Ulbe. “Fenneke Sysling, De Onmeetbare Mens: Schedels, Ras En Wetenschap in Nederlands-Indië”. BMGN - Low Countries Historical Review 131, no. 4 (November 17, 2016). Accessed November 21, 2024. https://bmgn-lchr.nl/article/view/6523.