Wiley, H. W. (1894). Principles and practice of agricultural analysis: A manual for the estimation of soils, fertilizers, and agricultural products. For the use of analysts, teachers, and students of agricultural chemistry. Chemical Pub. Co..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Wiley, Harvey Washington. Principles and Practice of Agricultural Analysis: A Manual for the Estimation of Soils, Fertilizers, and Agricultural Products. For the Use of Analysts, Teachers, and Students of Agricultural Chemistry. Easton, Pa.: Chemical Pub. Co., 1894.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Wiley, Harvey Washington. Principles and Practice of Agricultural Analysis: A Manual for the Estimation of Soils, Fertilizers, and Agricultural Products. For the Use of Analysts, Teachers, and Students of Agricultural Chemistry. Chemical Pub. Co., 1894.