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
"Obayan, E. O.",The future role of marketing boards in Nigeria's economic development,,[s.n.],1971,International Conference on the Marketing Board System,,,,https://cir.nii.ac.jp/crid/1130000794504313984