Sayre, R. F. (1977). Thoreau and the American Indians. Princeton University Press.
芝加哥风格引文Sayre, Robert F. Thoreau and the American Indians. Princeton, N.J.: Princeton University Press, 1977.
MLA引文Sayre, Robert F. Thoreau and the American Indians. Princeton University Press, 1977.
警告：这些引文格式不一定是100％准确.