@book{
title = {Bulletin},
author = {},
editor = {International Castles Institute},
editor = {Periodicità irregolate },
editor = {Continuazione di: Bulletin / Internationales Burgenforschungs-Institut = International Castle Research Institute = Institut International pour l'Etude des Chateaux (1951-1959) },
editor = {Continua con: International Castles Institute: IBI bulletin },
editor = {Descrizione basata su: n. 18 (1963) },
year = {2uuu},
address = {Château de Rosendael },
publisher = {Institut International des Chateaux Historiques},
}