APA (7th ed.) Citation

Phillips, C. F., & Duncan, D. J. (1968). Marketing: Principles and methods (6th ed.). Irwin.

Chicago Style (17th ed.) Citation

Phillips, Charles Franklin, and Delbert J. Duncan. Marketing: Principles and Methods. 6th ed. Homewood, Ill: Irwin, 1968.

MLA (9th ed.) Citation

Phillips, Charles Franklin, and Delbert J. Duncan. Marketing: Principles and Methods. 6th ed. Irwin, 1968.