Riddle, G. (1899). A modern reader and speaker: Containing the best readings, recitations and orations of the world's most celebrated authors and orators. Duffield.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Riddle, George. A Modern Reader and Speaker: Containing the Best Readings, Recitations and Orations of the World's Most Celebrated Authors and Orators. [New York]: Duffield, 1899.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Riddle, George. A Modern Reader and Speaker: Containing the Best Readings, Recitations and Orations of the World's Most Celebrated Authors and Orators. Duffield, 1899.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.