Dillon, W. R., Firtle, N. H., & Madden, T. J. (1987). Marketing research in a marketing environment: By William R. Dillon. Times Mirror/Mosby College Pub.
Cita Chicago (17th ed.)Dillon, William R., Neil H. Firtle, i Thomas J. Madden. Marketing Research in a Marketing Environment: By William R. Dillon. St. Louis, Mo: Times Mirror/Mosby College Pub, 1987.
Cita MLA (9th ed.)Dillon, William R., et al. Marketing Research in a Marketing Environment: By William R. Dillon. Times Mirror/Mosby College Pub, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.