Williams, S. (1984). Official methods of analysis of the Association of official analytical chemists (14th ed.). Association of official analytical chemists.
Παραπομπή Chicago StyleWilliams, Sidney. Official Methods of Analysis of the Association of Official Analytical Chemists. 14th ed. Arlington: Association of official analytical chemists, 1984.
Παραπομπή MLAWilliams, Sidney. Official Methods of Analysis of the Association of Official Analytical Chemists. 14th ed. Association of official analytical chemists, 1984.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.