Cita APA (7a ed.)

Udell, J. G., & Laczniak, G. R. (1981). Marketing in an age of change: An introduction. John Wiley & Sons.

Cita Chicago Style (17a ed.)

Udell, Jon G., y Gene R. Laczniak. Marketing in an Age of Change: An Introduction. New York [etc.]: John Wiley & Sons, 1981.

Cita MLA (9a ed.)

Udell, Jon G., y Gene R. Laczniak. Marketing in an Age of Change: An Introduction. John Wiley & Sons, 1981.