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} }