Cita APA (7th ed.)
Dillon, W. R., Firtle, N. H., & Madden, J. T. (1990). Marketing research in a marketing environment (2nd ed.). Irwin.
Cita Chicago (17th ed.)
Dillon, William R., Neil H. Firtle, i J. Thomas Madden. Marketing Research in a Marketing Environment. 2nd ed. London: Irwin, 1990.
Cita MLA (9th ed.)
Dillon, William R., et al. Marketing Research in a Marketing Environment. 2nd ed. Irwin, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.