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
"Madukwe, Michael C. and Ayichi, Damian",An assessment of the contact farmer strategy for agricultural technology transfer in Nigeria,,"African Rural Social Sciences Research Networks, Winrock International",1997,Issues in African rural development monograph series,,1573600075,,https://cir.nii.ac.jp/crid/1130000794661389568