Musick, W. L. (1897). The universal dictation course of Graham phonography: Made up of business letters from twenty-six different businesses, together with legal papers, depositions, and testimony from civil and criminal cases. Universal Text Book Co..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Musick, William Leslie. The Universal Dictation Course of Graham Phonography: Made Up of Business Letters from Twenty-six Different Businesses, Together with Legal Papers, Depositions, and Testimony from Civil and Criminal Cases. Chicago, Ill.: Universal Text Book Co., 1897.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Musick, William Leslie. The Universal Dictation Course of Graham Phonography: Made Up of Business Letters from Twenty-six Different Businesses, Together with Legal Papers, Depositions, and Testimony from Civil and Criminal Cases. Universal Text Book Co., 1897.