APA Style
      SPARKS, D.L. (1996).
    METHODS OF SOIL ANALYSIS. PART 3-CHEMICAL METHODS .
    USA:
  SOIL SCIENCE SOCIETY OF AMERICA,INC.
  
Chicago Style
      SPARKS, D.L.
    METHODS OF SOIL ANALYSIS. PART 3-CHEMICAL METHODS.
    
    USA:
  SOIL SCIENCE SOCIETY OF AMERICA,INC,
  1996.
  Text.
  
MLA Style
      SPARKS, D.L.
    METHODS OF SOIL ANALYSIS. PART 3-CHEMICAL METHODS.
    
    USA:
  SOIL SCIENCE SOCIETY OF AMERICA,INC,
  1996.
  Text.
  
Turabian Style
      SPARKS, D.L.
    METHODS OF SOIL ANALYSIS. PART 3-CHEMICAL METHODS.
     
    USA:
  SOIL SCIENCE SOCIETY OF AMERICA,INC,
  1996.
  Print.