Kortmann, Bernd. 1997. Adverbial Subordination: A Typology and History of Adverbial Subordinators Based on European Languages. Berlin: Mouton de Gruyter.
@book{Kortmann-1997,
address = {Berlin},
author = {Kortmann, Bernd},
publisher = {Mouton de Gruyter},
title = {Adverbial Subordination: A Typology and History of Adverbial Subordinators Based on European Languages},
year = {1997}
}