Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
WILLIAMS G. L.,Palynological stratigraphy of Deep Sea Drilling Project Site 416,Initial Reports of the Deep Sea Drilling Project,,U. S. Government Printing Office,1980,50,,467-495,https://cir.nii.ac.jp/crid/1570291224366831360,