Bor, Arie. 1986. Relative markers in Old Frisian. Us Wurk 35(3–4). 57–74.
@article{audersetinterrog-borrelative1986,
author = {Bor, Arie},
journal = {Us Wurk},
pages = {57–74},
title = {Relative markers in Old Frisian},
volume = {35(3–4)},
year = {1986}
}