Cramer Gail C. (2001). Agricultural Economics (8th.). John Wiley & Sons Inc.
芝加哥风格引文Cramer Gail C. Agricultural Economics. 8th. New York: John Wiley & Sons Inc, 2001.
MLA引文Cramer Gail C. Agricultural Economics. 8th. John Wiley & Sons Inc, 2001.
警告：这些引文格式不一定是100％准确.