Cooper,Donald R. (2011). Business Research Methods (9th.). McGraw Hill Education.
Citazione stile Chigago Style (17a edizione)Cooper,Donald R. Business Research Methods. 9th. McGraw Hill Education, 2011.
Citatione MLA (9a ed.)Cooper,Donald R. Business Research Methods. 9th. McGraw Hill Education, 2011.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.