Barton. The Changing Nature of the Maine Woods. University of New Hampshire Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBarton. The Changing Nature of the Maine Woods. University of New Hampshire Press.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBarton. The Changing Nature of the Maine Woods. University of New Hampshire Press.
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