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
"Willett, Frank and University of Edinburgh. Centre of African Studies","Baubles, bangles and beads : trade contacts of mediaeval Ife",,"[Centre of African Studies, University of Edinburgh]",1977,Thirteenth Melville J. Herskovits memorial lecture,,,,https://cir.nii.ac.jp/crid/1130282273292612096