Donald Cooper. (2019). Business Reserarch Methods (12th ed.). McGraw Hill.
Chicagoスタイル(17版)引用形式Donald Cooper. Business Reserarch Methods. 12th ed. Delhi: McGraw Hill, 2019.
MLA(9版)引用形式Donald Cooper. Business Reserarch Methods. 12th ed. McGraw Hill, 2019.
警告: この引用は必ずしも正確ではありません.