著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) ,"The Kalahari Basin area as a ""Sprachbund"" before the Bantu expansion","Hickey, Raymond (ed.), The Cambridge handbook of areal linguistics",,,2017,-,,500-526,https://cir.nii.ac.jp/crid/1010000782246767384,