Singer Company. (1893). Catalogue of Singer sewing machines for family use. Singer Manufacturing Co..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Singer Company. Catalogue of Singer Sewing Machines for Family Use. [New York]: Singer Manufacturing Co., 1893.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Singer Company. Catalogue of Singer Sewing Machines for Family Use. Singer Manufacturing Co., 1893.
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