Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL "Sundquist, E. T. (Eric T.) and Broecker, Wallace S. and Chapman Conference on Natural Variations in Carbon Dioxide and the Carbon Cycle and American Geophysical Union",The Carbon cycle and atmospheric CO[2] : natural variations Archean to present,,American Geophysical Union,1985,Geophysical monograph,,0875900607,,https://cir.nii.ac.jp/crid/1130282272194056320