Abrams, R. (1939). Transcription error charts: To aid the student in analyzing and keeping a daily record of his errors under three classifications: English, typewriting, and shorthand. Gregg Pub. Co..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Abrams, Ray. Transcription Error Charts: To Aid the Student in Analyzing and Keeping a Daily Record of His Errors Under Three Classifications: English, Typewriting, and Shorthand. New York : Chicago [etc.]: Gregg Pub. Co., 1939.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Abrams, Ray. Transcription Error Charts: To Aid the Student in Analyzing and Keeping a Daily Record of His Errors Under Three Classifications: English, Typewriting, and Shorthand. Gregg Pub. Co., 1939.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.