Crimp, M. (1981). The marketing research process. Prentice-Hall.
Cita Chicago (17th ed.)Crimp, Margaret. The Marketing Research Process. Englewood Cliffs, N. J: Prentice-Hall, 1981.
Cita MLA (9th ed.)Crimp, Margaret. The Marketing Research Process. Prentice-Hall, 1981.
Atenció: Aquestes cites poden no estar 100% correctes.