@inbook {2008,
	title = {Betoverende baksteenvariaties. Laatromaanse architectuur},
	booktitle = {De Groninger cultuurschat. De kerken van 1000 tot 1800},
	year = {2008},
	pages = {18-45},
	publisher = {Philips Elchers-Van Gorcum},
	organization = {Philips Elchers-Van Gorcum},
	address = {Groningen-Assen},
	isbn = {978-90-232-4482-0},
	author = {Ploeg, Kees van der},
	editor = {Kroesen, J.E.A. and Steensma, Regnerus}
}
@article {2008,
	title = {De iconografie van de laatmiddeleeuwse Friese priesterzerken: Spiegel van een overgangstijd},
	journal = {De Vrije Fries},
	volume = {88},
	year = {2008},
	pages = {65-86},
	author = {Steensma, Regnerus}
}
@inbook {2008,
	title = {Sacrale sporen. De middeleeuwse kerkinrichting},
	booktitle = {De Groninger cultuurschat. De kerken van 1000 tot 1800},
	year = {2008},
	pages = {63-80},
	publisher = {Philips Elchers-Van Gorcum},
	organization = {Philips Elchers-Van Gorcum},
	address = {Groningen-Assen},
	isbn = {978-90-232-4482-0},
	author = {Steensma, Regnerus},
	editor = {Kroesen, J.E.A. and Steensma, Regnerus}
}
@inbook {2008,
	title = {Soberheid in ronde bogen. Tufstenen en vroege bakstenen kerken},
	booktitle = {De Groninger cultuurschat. De kerken van 1000 tot 1800},
	year = {2008},
	pages = {8-17},
	publisher = {Philips Elchers-Van Gorcum},
	organization = {Philips Elchers-Van Gorcum},
	address = {Groningen-Assen},
	isbn = {978-90-232-4482-0},
	author = {Olde, H.G. de},
	editor = {Kroesen, J.E.A. and Steensma, Regnerus}
}
@inbook {2008,
	title = {Van hemelpoort tot hellemuil. Schilderingen op muren en gewelven},
	booktitle = {De Groninger cultuurschat. De kerken van 1000 tot 1800},
	year = {2008},
	pages = {81-102},
	publisher = {Philips Elchers-Van Gorcum},
	organization = {Philips Elchers-Van Gorcum},
	address = {Groningen-Assen},
	isbn = {978-90-232-4482-0},
	author = {Lier, Saskia van},
	editor = {Kroesen, J.E.A. and Steensma, Regnerus}
}
@inbook {2008,
	title = {Van ranke gewelven en overvloedig licht. De Groninger gotiek},
	booktitle = {De Groninger cultuurschat. De kerken van 1000 tot 1800},
	year = {2008},
	pages = {46-57},
	publisher = {Philips Elchers-Van Gorcum},
	organization = {Philips Elchers-Van Gorcum},
	address = {Groningen-Assen},
	isbn = {978-90-232-4482-0},
	author = {Kroesen, J.E.A.},
	editor = {Kroesen, J.E.A. and Steensma, Regnerus}
}
@article {2007,
	title = {Sporen van de katholieke eredienst in middeleeuwse Drentse kerken},
	journal = {Nieuwe Drentse Volksalmanak},
	volume = {124},
	year = {2007},
	pages = {1-20},
	author = {Steensma, Regnerus}
}
@article {2005,
	title = {Katholieke kerkschatten in Oostergo rond 1580},
	journal = {De Vrije Fries},
	volume = {85},
	year = {2005},
	pages = {128-159},
	author = {Steensma, Regnerus}
}
