APA

Phelps G. G., St. Johns River Water Management District (Fla.), .Chemistry of ground water in the Silver Springs Basin, Florida, with an emphasis on nitrate / |c by G.G. Phelps ; prepared in cooperation with St. Johns River Water Management District ... [et al.]. Reston, Va. : |b U.S. Dept. of Interior, U.S. Geological Survey ; |a Denver, CO : |b U.S. Geological Survey, Information Services [distributor], |c 2004: .

Chicago

Phelps G G, St. Johns River Water Management District (Fla.), .Chemistry of ground water in the Silver Springs Basin, Florida, with an emphasis on nitrate / |c by G.G. Phelps ; prepared in cooperation with St. Johns River Water Management District ... [et al.]. Reston, Va. : |b U.S. Dept. of Interior, U.S. Geological Survey ; |a Denver, CO : |b U.S. Geological Survey, Information Services [distributor], |c 2004: .

Harvard

Phelps G. G., St. Johns River Water Management District (Fla.), .Chemistry of ground water in the Silver Springs Basin, Florida, with an emphasis on nitrate / |c by G.G. Phelps ; prepared in cooperation with St. Johns River Water Management District ... [et al.]. Reston, Va. : |b U.S. Dept. of Interior, U.S. Geological Survey ; |a Denver, CO : |b U.S. Geological Survey, Information Services [distributor], |c 2004: .

MLA

Phelps G G, St. Johns River Water Management District (Fla.), .Reston, Va. : |b U.S. Dept. of Interior, U.S. Geological Survey ; |a Denver, CO : |b U.S. Geological Survey, Information Services [distributor], |c 2004: . .