@inbook {1991, title = {Priesters en leken in de preken van Radulphus Ardens (ca. 1190)}, booktitle = {Kerstening van christenen. De verhouding van geestelijken en leken in de hoge middeleeuwen}, year = {1991}, pages = {115-163}, publisher = {Rodopi}, organization = {Rodopi}, address = {Amsterdam}, issn = {90-5183-278-8}, author = {Hagoort, H.N.}, editor = {Theunis, Hendrik B. and Hagoort, H.N. and Spijker, Ineke van {\textquoteright}t and Wegman, H.A.J.} }