Fennel, Trevor Garth and Gelson, Henry. 1980. A Grammar of Modern Latvian. (3.) The Hague: Mouton.
@book{kortmannadverbial-Fennel1980,
address = {The Hague},
author = {Fennel, Trevor Garth and Gelson, Henry},
publisher = {Mouton},
title = {A Grammar of Modern Latvian},
volume = {3},
year = {1980}
}