TULL DONALD S. (1976). MARKETING RESEARCH MEANING MEASURMENT & METHOD.TEXT WITH CASES. MACMILLAN.
Chicago (17e ed.) BronvermeldingTULL DONALD S. MARKETING RESEARCH MEANING MEASURMENT & METHOD.TEXT WITH CASES. NEW YORK: MACMILLAN, 1976.
MLA (9e ed.) BronvermeldingTULL DONALD S. MARKETING RESEARCH MEANING MEASURMENT & METHOD.TEXT WITH CASES. MACMILLAN, 1976.
Let op: Deze citaties zijn niet altijd 100% accuraat.