Williams, S. (1984). Official methods of analysis of the Association of official analytical chemists (14th ed.). Association of official analytical chemists.
Trích dẫn kiểu ChicagoWilliams, Sidney. Official Methods of Analysis of the Association of Official Analytical Chemists. 14th ed. Arlington: Association of official analytical chemists, 1984.
Trích dẫn MLAWilliams, Sidney. Official Methods of Analysis of the Association of Official Analytical Chemists. 14th ed. Association of official analytical chemists, 1984.
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