Mitchell, S. A. (1863). A system of modern geography: Comprising a description of the present state of the world, and its five great divisions, America, Europe, Asia, Africa, and Oceanica (38th ed.). E.H. Butler.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Mitchell, S. Augustus. A System of Modern Geography: Comprising a Description of the Present State of the World, and Its Five Great Divisions, America, Europe, Asia, Africa, and Oceanica. 38th ed. Philadelphia: E.H. Butler, 1863.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Mitchell, S. Augustus. A System of Modern Geography: Comprising a Description of the Present State of the World, and Its Five Great Divisions, America, Europe, Asia, Africa, and Oceanica. 38th ed. E.H. Butler, 1863.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.