Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL "Sill, Cathryn P. and Sill, John C. and 藤田, 千枝",草原のこと,,玉川大学出版部,2013,自然スケッチ絵本館,,9784472059292,,https://cir.nii.ac.jp/crid/1130282269071663744