@inbook {1999,
	title = {De archeologie van vroeg- en vol-middeleeuws Leeuwarden},
	booktitle = {Leeuwarden 750-2000. Hoofdstad van Friesland},
	year = {1999},
	pages = {18-45},
	publisher = {Uitgeverij Van Wijnen},
	organization = {Uitgeverij Van Wijnen},
	address = {Franeker},
	issn = {90-5194-173-0},
	author = {Langen, Gilles J. de},
	editor = {Kunst, Ren{\'e}}
}
