Donald Cooper. (2019). Business Reserarch Methods (12th ed.). McGraw Hill.
芝加哥风格引文Donald Cooper. Business Reserarch Methods. 12th ed. Delhi: McGraw Hill, 2019.
MLA引文Donald Cooper. Business Reserarch Methods. 12th ed. McGraw Hill, 2019.
警告：这些引文格式不一定是100％准确.