1. de Bruijn, N.G.: Commentary (on B. L. Van der Waerden’s article [Wae2]). In: Berin, E.M.J., et al. (eds.) Two Decades of Mathematics in the Netherlands, 1920–1940. Part I, pp. 116–124. Mathematical Centre, Amsterdam (1978)
2. Bruijn, N. G. de: e-mail to A. Soifer, June 21, 1995
3. Bruijn, N. G. de: e-mail to A. Soifer, May 26, 2004
4. Dold-Samplonius: Bartel Leendert van der Waerden befragt von Yvonne Dold-Samplonius. NTM Int. J. Hist. Ethics Nat. Sci. Technol. Med. 2, 129–147 (1994). English translation: Interview with Bartel Leendert van der Waerden, Notices Amer. Math. Soc. 44(3), pp. 313–320 (1997)
5. Dold-Samplonius: In memoriam: Bartel Leendert van der Waerden (1903–1996). Hist. Math. 24, 125–130 (1997)