著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI)
Masayuki Kawahigashi and Hiroaki Sumida,Humus composition and physico-chemical properties of humic acids in tropical peat soils under sago palm plantation,Soil science & plant nutrition,00380768,Tokyo : Japanese Society of Soil Science and Plant Nutrition,2006-04,52,2,153-161,https://cir.nii.ac.jp/crid/1522825129744699392,