2021 June 23, “Press conference on 'Shaanxi: Carrying forward Yan'an spirit, endeavoring to write new chapter of accelerated growth in new era'”, in State Council Information Office, archived from the original on 10 June 2022
1984, Dr. Hoffman, [Testimony before the United States House Committee on Public Works and Transportation, Subcommittee on Water Resources] To Prohibit the Secretary of the Army from Issuing Certain Permits in Connection with a Proposed Water Pipeline Project Until an Environmental Impact Statement for that Project Has Been Completed: […] February 8, 1984, page 249
1986, North Carolina. Division of Water Resources, Dan River Basin Study, North Carolina: Phase I
2009, Katherine K. Mull, Dan River Basin Association, An Insider's Guide to the Dan River in North Carolina and Virginia: 125 Miles of Nature and History : Canoeing, Kayaking, Fishing, Hiking, River Heritage, Parks, Trails