Smith, N. (2003). American empire: Roosevelt's geographer and the prelude to globalization. University of California Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSmith, Neil. American Empire: Roosevelt's Geographer and the Prelude to Globalization. Berkeley: University of California Press, 2003.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSmith, Neil. American Empire: Roosevelt's Geographer and the Prelude to Globalization. University of California Press, 2003.
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