Lasswell, Steven Theophilos. 1998. An Ecological Reference Grammar of Sölring North Frisian. (Doctoral dissertation, University of California, Santa Barbara).
@phdthesis{audersetinterrog-lasswellecological1998, address = {Santa Barbara &CA}, author = {Lasswell, Steven Theophilos}, school = {University of California, Santa Barbara}, title = {An Ecological Reference Grammar of Sölring North Frisian}, type = {PhD Thesis}, year = {1998} }