Valdes, A., & Schaeffer, B. (1995). Surveillance of Agricultural Prices and Trade Policies: A Hangbook for Uruguay.
芝加哥风格引文Valdes, Alberto, 与 Barry Schaeffer. Surveillance of Agricultural Prices and Trade Policies: A Hangbook for Uruguay. 1995.
MLA引文Valdes, Alberto, 与 Barry Schaeffer. Surveillance of Agricultural Prices and Trade Policies: A Hangbook for Uruguay. 1995.
警告：这些引文格式不一定是100％准确.