Brigham, A. P. (1903). Geographic influences in American history. Ginn and Company.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBrigham, Albert Perry. Geographic Influences in American History. Boston: Ginn and Company, 1903.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBrigham, Albert Perry. Geographic Influences in American History. Ginn and Company, 1903.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.