MLA

Olsen, Birgit Anette. The Proto-indo-european Instrument Noun Suffix *-tlom and Its Variants. Copenhagen: Royal Danish Academy of Sciences and Letters , 1988.

APA

Olsen, B. Anette. (1988). The Proto-Indo-European instrument noun suffix *-tlom and its variants. Copenhagen: Royal Danish Academy of Sciences and Letters .

Chicago

Olsen, Birgit Anette The Proto-Indo-European Instrument Noun Suffix *-Tlom and Its Variants. Copenhagen: Royal Danish Academy of Sciences and Letters, 1988.