Samuels, G. B. (1999). Enduring roots: Encounters with trees, history, and the American landscape. Rutgers University Press.
芝加哥风格引文Samuels, Gayle Brandow. Enduring Roots: Encounters with Trees, History, and the American Landscape. New Brunswick, N.J.: Rutgers University Press, 1999.
MLA引文Samuels, Gayle Brandow. Enduring Roots: Encounters with Trees, History, and the American Landscape. Rutgers University Press, 1999.
警告：这些引文格式不一定是100％准确.