Dillon, W. R., Firtle, N. H., & Madden, J. T. (1994). Marketing research in a marketing environment (3rd ed.). Irwin.
Chicago (17e ed.) BronvermeldingDillon, William R., Neil H. Firtle, en J. Thomas Madden. Marketing Research in a Marketing Environment. 3rd ed. London: Irwin, 1994.
MLA (9e ed.) BronvermeldingDillon, William R., et al. Marketing Research in a Marketing Environment. 3rd ed. Irwin, 1994.
Let op: Deze citaties zijn niet altijd 100% accuraat.