著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL "Muthwii, Margaret Jepkirui",Variability in language use : a study of Kalenjin speakers of English and Kiswahili in Kenya,,Supplied by the British Library Document Supply Centre,1994,British thesis service,,,,https://cir.nii.ac.jp/crid/1130282270824478208