Thorington, J. (1916). Refraction of the human eye and methods of estimating the refraction: Including a section on the fitting of spectacles and eye-glasses, etc. P. Blakiston's Son & Co.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Thorington, James. Refraction of the Human Eye and Methods of Estimating the Refraction: Including a Section on the Fitting of Spectacles and Eye-glasses, Etc. Philadelphia: P. Blakiston's Son & Co, 1916.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Thorington, James. Refraction of the Human Eye and Methods of Estimating the Refraction: Including a Section on the Fitting of Spectacles and Eye-glasses, Etc. P. Blakiston's Son & Co, 1916.
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