Reitsma, Jan (2007), Religiosity and Solidarity. Dimensions and relationships disentangled and tested: Proefschrift Radboud Universiteit Nijmegen, pp. 134, ISBN 978-90-811956-1-4 (ICS-dissertation nr. 135). (2008). Religie & Samenleving, 3(2), 139-140. https://doi.org/10.54195/RS.13165