Smith, J. R. (1929). Tree crops: A permanent agriculture. Harcourt, Brace.
芝加哥风格引文Smith, J. Russell. Tree Crops: A Permanent Agriculture. New York: Harcourt, Brace, 1929.
MLA引文Smith, J. Russell. Tree Crops: A Permanent Agriculture. Harcourt, Brace, 1929.
警告：这些引文格式不一定是100％准确.