Etymological Dictionary of the Germans, prepared under the direction of Wolfgang Pfeifer. Berlin 1989, reprinted several times since (c.f. "Mark" (页面存档备份,存于互联网档案馆), provided by the Digital Dictionary of the German Language, retrieved 9 January 2020).
Etymological Dictionary of the Germans, prepared under the direction of Wolfgang Pfeifer. Berlin 1989, reprinted several times since (c.f. "Mark" (页面存档备份,存于互联网档案馆), provided by the Digital Dictionary of the German Language, retrieved 9 January 2020).