Horwitz, W. (1970). Official methods of analysis of the association of official analytical chemists: :11th ed (11th ed.). Association fo Official Analytical Chemists.
Trích dẫn kiểu ChicagoHorwitz, William. Official Methods of Analysis of the Association of Official Analytical Chemists: :11th Ed. 11th ed. Washington: Association fo Official Analytical Chemists, 1970.
Trích dẫn MLAHorwitz, William. Official Methods of Analysis of the Association of Official Analytical Chemists: :11th Ed. 11th ed. Association fo Official Analytical Chemists, 1970.
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