Allen, A. H. (1879). An introduction to the practice of commercial organic analysis: Being a treatise on the properties, proximate analytical examination, and modes of assaying the various organic chemicals and preparations. Lindsay & Blakiston.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Allen, Alfred Henry. An Introduction to the Practice of Commercial Organic Analysis: Being a Treatise on the Properties, Proximate Analytical Examination, and Modes of Assaying the Various Organic Chemicals and Preparations. Philadelphia: Lindsay & Blakiston, 1879.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Allen, Alfred Henry. An Introduction to the Practice of Commercial Organic Analysis: Being a Treatise on the Properties, Proximate Analytical Examination, and Modes of Assaying the Various Organic Chemicals and Preparations. Lindsay & Blakiston, 1879.