Wrenn, B. (1988). Instructor's manual: marketing management: Analysis, planning, implementation, and control (6th ed.). Prentice-Hall.
芝加哥风格引文Wrenn, Bruce. Instructor's Manual: Marketing Management: Analysis, Planning, Implementation, and Control. 6th ed. Englewood Cliffs, N.J: Prentice-Hall, 1988.
MLA引文Wrenn, Bruce. Instructor's Manual: Marketing Management: Analysis, Planning, Implementation, and Control. 6th ed. Prentice-Hall, 1988.
警告：这些引文格式不一定是100％准确.