Hudspeth, R. N. (2014). The correspondence of Henry D. Thoreau. Princeton University Press.
芝加哥风格引文Hudspeth, Robert N. The Correspondence of Henry D. Thoreau. Princeton, New Jersey ; Oxfordshire, England: Princeton University Press, 2014.
MLA引文Hudspeth, Robert N. The Correspondence of Henry D. Thoreau. Princeton University Press, 2014.
警告：这些引文格式不一定是100％准确.