Baily, P., & Farmer, D. (1990). Purchasing principle and management (6th ed.). Pitman.
芝加哥风格引文Baily, Petter, 与 David Farmer. Purchasing Principle and Management. 6th ed. London: Pitman, 1990.
MLA引文Baily, Petter, 与 David Farmer. Purchasing Principle and Management. 6th ed. Pitman, 1990.
警告：这些引文格式不一定是100％准确.