@book {1990, title = {De Johannieters in Stad en Lande. Geschiedenis van de Johannieters in de provincie Groningen (13de-17de eeuw)}, year = {1990}, pages = {164}, publisher = {Sikkema}, organization = {Sikkema}, address = {Warffum}, issn = {90-7331-901-3}, author = {Noordhuis, G.F.} }