Schmid, R. v., & Zimmermann, G. A. (1883). The theories of Darwin and their relation to philosophy, religion, and morality. Jansen, McClurg & company.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Schmid, Rudolf von, و Gustav Adolf Zimmermann. The Theories of Darwin and Their Relation to Philosophy, Religion, and Morality. Chicago: Jansen, McClurg & company, 1883.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Schmid, Rudolf von, و Gustav Adolf Zimmermann. The Theories of Darwin and Their Relation to Philosophy, Religion, and Morality. Jansen, McClurg & company, 1883.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.