Cooper,Donald R. (2011). Business Research Methods (9th.). McGraw Hill Education.
芝加哥风格引文Cooper,Donald R. Business Research Methods. 9th. McGraw Hill Education, 2011.
MLA引文Cooper,Donald R. Business Research Methods. 9th. McGraw Hill Education, 2011.
警告：这些引文格式不一定是100％准确.