Cooper,Donald R. (2011). Business Research Methods (9th.). McGraw Hill Education.
Chicago (17e ed.) BronvermeldingCooper,Donald R. Business Research Methods. 9th. McGraw Hill Education, 2011.
MLA (9e ed.) BronvermeldingCooper,Donald R. Business Research Methods. 9th. McGraw Hill Education, 2011.
Let op: Deze citaties zijn niet altijd 100% accuraat.