Cramer, G. L., .Cramer, G. L., & .Heid, W. G. (1983). Grain marketing economics. John Wiley & Sons.
芝加哥风格引文Cramer, Gail L., Gail L. .Cramer, 与 Walter G. .Heid. Grain Marketing Economics. New York: John Wiley & Sons, 1983.
MLA引文Cramer, Gail L., et al. Grain Marketing Economics. John Wiley & Sons, 1983.
警告：这些引文格式不一定是100％准确.