Swan, Toril . Modality in germanic languages: historical and comparative perspectives / edited by Toril Swan and Olaf Jansen Westvik. - Berlin : Mouton De Gruyter , 1997 - 319p ; ISBN: 3-11-014334-8 Subjects--Topical Terms: Germanic languages- Modality Dewey Class. No.: (Ref) P113:2v / N7