Cita APA (7th ed.)
Etzel, M. J., Walker, B. J., & Stanton, W. J. (2004). Marketing (13th ed.). McGraw-Hill.
Cita Chicago (17th ed.)
Etzel, Michael J., Bruce J. Walker, i William J. Stanton. Marketing. 13th ed. Boston, Mass. ; New Delhi: McGraw-Hill, 2004.
Cita MLA (9th ed.)
Etzel, Michael J., et al. Marketing. 13th ed. McGraw-Hill, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.