@article{Ruig_1983, title={Mr. H.P.G. Quack. De ongebroken kracht van de illusie}, volume={98}, url={https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-102589}, DOI={10.18352/bmgn-lchr.2392}, number={2}, journal={BMGN - Low Countries Historical Review}, author={Ruig, R. de}, year={1983}, month={Jan.}, pages={191–211} }