Cita APA (7th ed.)
Udell, J. G., & Laczniak, E. R. (1981). Marketing in an age of change: An introduction. Wiley.
Cita Chicago (17th ed.)
Udell, Jon G., i Eugene R. Laczniak. Marketing in an Age of Change: An Introduction. New York: Wiley, 1981.
Cita MLA (9th ed.)
Udell, Jon G., i Eugene R. Laczniak. Marketing in an Age of Change: An Introduction. Wiley, 1981.
Atenció: Aquestes cites poden no estar 100% correctes.