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
"Edmondson, Tom and Edmondson, Eileen",Preliminary notes towards a phonological description of Etung (Ejagham),[Microfiche ed.],Summer Institute of Linguistics,1977,Language data microfiche,,,,https://cir.nii.ac.jp/crid/1130848326597934336