Kennedy, James. “H. Krabbendam, The Model Man. A Life of Edward William Bok, 1863-1930”. BMGN - Low Countries Historical Review 118, no. 1 (January 1, 2003): 118–119. Accessed December 22, 2024. https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-106670.