อ้างอิง ของ แม่น้ำเซนต์จอนส์

  1. ↑ Whitney, p. 215.
  2. ↑ Belleville, p. xxi.
  3. ↑ The St. Johns River: Nominated as an American Heritage River, Environmental Protection Agency. Retrieved on July 17, 2009.
  4. ↑ Whitney, p. 136.
  5. ↑ Ball, David (April 14, 2008).St. Johns River Makes ‘Endangered’ List, Jacksonville Financial and Daily Record, Retrieved on July 17, 2009.
  6. ↑ Benke and Cushing, p. 100.
  7. ↑ Belleville, p. 14.
  8. ↑ McCarthy, p. 88–100.
  9. ↑ US Census July 1, 2006 est.
  10. ↑ The St. Johns River: Nominated as an American Heritage River, Environmental Protection Agency (Part 2). Retrieved on July 17, 2009.

แหล่งที่มา

WikiPedia: แม่น้ำเซนต์จอนส์ http://www.jaxdailyrecord.com/showstory.php?Story_... http://www.epa.gov/rivers/plan/stjohn1.pdf http://www.epa.gov/rivers/plan/stjohn2.pdf http://www.protectingourwater.org/ http://www.protectingourwater.org/watersheds/map/l... http://www.protectingourwater.org/watersheds/map/m... http://www.protectingourwater.org/watersheds/map/u... http://www.stjohnsriverkeeper.org/ http://www.dep.state.fl.us/gwt/cfg/pdf/History_Rep... http://sjr.state.fl.us/