Donald Cooper. (2019). Business Reserarch Methods (12th ed.). McGraw Hill.
Citazione stile Chigago Style (17a edizione)Donald Cooper. Business Reserarch Methods. 12th ed. Delhi: McGraw Hill, 2019.
Citatione MLA (9a ed.)Donald Cooper. Business Reserarch Methods. 12th ed. McGraw Hill, 2019.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.