Barker, J. E. (1907). Modern Germany: Her political and economic problems, her foreign and domestic policy, her ambitions, and the causes of her success (2d and very greatly enl. ed.). Smith, Elder & Co..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Barker, J. Ellis. Modern Germany: Her Political and Economic Problems, Her Foreign and Domestic Policy, Her Ambitions, and the Causes of Her Success. 2d and very greatly enl. ed. London: Smith, Elder & Co., 1907.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Barker, J. Ellis. Modern Germany: Her Political and Economic Problems, Her Foreign and Domestic Policy, Her Ambitions, and the Causes of Her Success. 2d and very greatly enl. ed. Smith, Elder & Co., 1907.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.