Rex C. Buchanan, B. Brownie Wilson, Robert R. Buddemeier, and James J. Butler, Jr. The High Plains Aquifer. Kansas Geological Survey, Public Information Circular (PIC) 18. [2022-08-14]. (原始内容存档于2021-12-03).
usda.gov
nrcs.usda.gov
Ogallala Aquifer Initiative 2011 Report(PDF). Natural Resources Conservation Service. United States Department of Agriculture. 2011 [2016-10-02]. (原始内容存档(PDF)于2022-05-02).
Rex C. Buchanan, B. Brownie Wilson, Robert R. Buddemeier, and James J. Butler, Jr. The High Plains Aquifer. Kansas Geological Survey, Public Information Circular (PIC) 18. [2022-08-14]. (原始内容存档于2021-12-03).
Ogallala Aquifer Initiative 2011 Report(PDF). Natural Resources Conservation Service. United States Department of Agriculture. 2011 [2016-10-02]. (原始内容存档(PDF)于2022-05-02).