Smith, N. (2003). American empire: Roosevelt's geographer and the prelude to globalization. University of California Press.
Chicago-referens (17:e uppl.)Smith, Neil. American Empire: Roosevelt's Geographer and the Prelude to Globalization. Berkeley: University of California Press, 2003.
MLA-referens (9:e uppl.)Smith, Neil. American Empire: Roosevelt's Geographer and the Prelude to Globalization. University of California Press, 2003.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.