Horwitz, W. (1970). Official methods of analysis of the association of official analytical chemists: :11th ed (11th ed.). Association fo Official Analytical Chemists.
استشهاد بنمط شيكاغوHorwitz, William. Official Methods of Analysis of the Association of Official Analytical Chemists: :11th Ed. 11th ed. Washington: Association fo Official Analytical Chemists, 1970.
MLA استشهادHorwitz, William. Official Methods of Analysis of the Association of Official Analytical Chemists: :11th Ed. 11th ed. Association fo Official Analytical Chemists, 1970.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.