@book {2004,
	title = {Hir is eskriven. Lezen en schrijven in de Friese landen rond 1300},
	series = {Middeleeuwse Studies en Bronnen},
	volume = {82},
	year = {2004},
	pages = {165},
	publisher = {Verloren-Fryske Akademy},
	organization = {Verloren-Fryske Akademy},
	address = {Hilversum-Leeuwarden},
	issn = {9065508171},
	author = {Bremmer, Rolf Hendrik}
}
@book {1994,
	title = {Friese testamenten tot 1550},
	series = {Boarnerige},
	volume = {4},
	year = {1994},
	pages = {XXXV+664},
	publisher = {Fryske Akademy-Fries Genootschap voor Geschied-, Oudheid- en Taalkunde},
	organization = {Fryske Akademy-Fries Genootschap voor Geschied-, Oudheid- en Taalkunde},
	address = {Leeuwarden},
	isbn = {978-90-6171-778-2},
	issn = {90-6171-778-7},
	author = {Verhoeven, Gerrit and Mol, J.A.(Hans)}
}
