Phillips, C. F., Duncan, D. J., Carman, J. M., & Uhl, K. P. (1973). Phillips and Duncan's Marketing: Principles and methods (7th ed.). R. D. Irwin.
Cita Chicago (17th ed.)Phillips, Charles Franklin, Delbert J. Duncan, James M. Carman, i Kenneth P. Uhl. Phillips and Duncan's Marketing: Principles and Methods. 7th ed. Homewood, Ill: R. D. Irwin, 1973.
Cita MLA (9th ed.)Phillips, Charles Franklin, et al. Phillips and Duncan's Marketing: Principles and Methods. 7th ed. R. D. Irwin, 1973.
Atenció: Aquestes cites poden no estar 100% correctes.