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.
Chicago-referens (17:e uppl.)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.
MLA-referens (8:e uppl.)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.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.