Shepherd, G. S., & Futrell, G. A. (1969). Marketing farm products; economic analysis (5th ed.). Iowa State University Press.
芝加哥风格引文Shepherd, Geoffrey Seddon, 与 Gene A. Futrell. Marketing Farm Products; Economic Analysis. 5th ed. Ames: Iowa State University Press, 1969.
MLA引文Shepherd, Geoffrey Seddon, 与 Gene A. Futrell. Marketing Farm Products; Economic Analysis. 5th ed. Iowa State University Press, 1969.
警告：这些引文格式不一定是100％准确.