McClellan, G. S. (1971). Land use in the United States: Exploitation or conservationn. H. W. Wilson Co.
芝加哥风格引文McClellan, Grant S. Land Use in the United States: Exploitation or Conservationn. New York: H. W. Wilson Co, 1971.
MLA引文McClellan, Grant S. Land Use in the United States: Exploitation or Conservationn. H. W. Wilson Co, 1971.
警告：这些引文格式不一定是100％准确.