Humphreys, H. N. (1855). The origin and progress of the art of writing: A connected narrative of the development of the art in its primeval phases in Egypt, China, and Mexico ... and its subsequent progress to the present day (2nd ed.). Day and Son.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Humphreys, Henry Noel. The Origin and Progress of the Art of Writing: A Connected Narrative of the Development of the Art in Its Primeval Phases in Egypt, China, and Mexico ... and Its Subsequent Progress to the Present Day. 2nd ed. London: Day and Son, 1855.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Humphreys, Henry Noel. The Origin and Progress of the Art of Writing: A Connected Narrative of the Development of the Art in Its Primeval Phases in Egypt, China, and Mexico ... and Its Subsequent Progress to the Present Day. 2nd ed. Day and Son, 1855.