Language contactde Dirk Boutkan, Arend QuakMateriasGermanic languagesForeign elementsLanguages in contactEdiciones (1)Language Contact (2000)Editions Rodopi B.V. · ISBN 9789042014541Más obras de Dirk BoutkanA concise grammar of the Old Frisian dialect of the first Riustring manuscript1996The Germanic "Auslautgesetze"1995Old Frisian etymological dictionary2004