Horwitz, W. <br/><br/>
Official Methods of Analysis of AOAC International  Textual Documents 

 - 18th ed. 
 - USA:  AOAC,  2010. 
 - P.13. 
<br/><br/><label>ISBN: </label>0935584781   
<br/><br/><label>Subjects--Index Terms: </label>Analytical Chemistry 
<br/><br/><label>Dewey Class. No.: </label>543  / HOR