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
"Williams, Laurence Albert Joseph","Geology of the Mara River-Sianna Area : degree sheet 50, N.W. and S.W. quarters : with two coloured geological maps",,The government printer,1964,Geological survey of Kenya,,,,https://cir.nii.ac.jp/crid/1130282270948443904