Beri, G. C. (2018). Marketing Research (5th ed.). McGraw Hill Education (India) Pvt. Ltd.
Chicago (17e ed.) BronvermeldingBeri, G. C. Marketing Research. 5th ed. Chennai: McGraw Hill Education (India) Pvt. Ltd, 2018.
MLA (9e ed.) BronvermeldingBeri, G. C. Marketing Research. 5th ed. McGraw Hill Education (India) Pvt. Ltd, 2018.
Let op: Deze citaties zijn niet altijd 100% accuraat.